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Pectolite

A valid IMA mineral species - grandfathered
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00044680014947311507831.jpg
Pectolite

Millington Quarry, Bernards Township, Somerset County, New Jersey, USA
04947880014946247535204.jpg
Pectolite

Poudrette quarry, Mont Saint-Hilaire, La Vallée-du-Richelieu RCM, Montérégie, Québec, Canada
05573820014965836506235.jpg
Pectolite

Poudrette quarry, Mont Saint-Hilaire, La Vallée-du-Richelieu RCM, Montérégie, Québec, Canada
00044680014947311507831.jpg
Pectolite

Millington Quarry, Bernards Township, Somerset County, New Jersey, USA
09469050014949722727302.jpg
Pectolite

Poudrette quarry, Mont Saint-Hilaire, La Vallée-du-Richelieu RCM, Montérégie, Québec, Canada
05573820014965836506235.jpg
Pectolite

Poudrette quarry, Mont Saint-Hilaire, La Vallée-du-Richelieu RCM, Montérégie, Québec, Canada
00044680014947311507831.jpg
Pectolite

Millington Quarry, Bernards Township, Somerset County, New Jersey, USA
04947880014946247535204.jpg
Pectolite

Poudrette quarry, Mont Saint-Hilaire, La Vallée-du-Richelieu RCM, Montérégie, Québec, Canada
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About PectoliteHide

Formula:
NaCa2Si3O8(OH)
Colour:
Colourless, white, pale pink, greenish, pale blue
Lustre:
Sub-Vitreous, Silky
Hardness:
4½ - 5
Specific Gravity:
2.84 - 2.9
Crystal System:
Triclinic
Name:
Named in 1828 by Franz von Kobell from the Greek πηκτός (English: pektos) for "held tightly together", in allusion to its resistance to pulverization.
Wollastonite Group.
Pectolite-Serandite Series. The calcium analogue of Sérandite.
Constitutes serandite-schizolite-pectolite series.

Visit gemdat.org for gemological information about Pectolite.



Unique IdentifiersHide

Mindat ID:
3141
Long-form identifier:
mindat:1:1:3141:3
GUID
(UUID V4):
4717fbcb-4a4b-42ed-b52d-ed7ad68bbba4

IMA Classification of PectoliteHide

IMA status:
Approved, 'Grandfathered' (first described prior to 1959)

Classification of PectoliteHide

Strunz-mindat (2024):
9.DG.05

9 : SILICATES (Germanates)
D : Inosilicates
G : Inosilicates with 3-periodic single and multiple chains
Dana 8th ed.:
65.2.1.4a

65 : INOSILICATES Single-Width,Unbranched Chains,(W=1)
2 : Single-Width Unbranched Chains, W=1 with chains P=3
Hey's CIM Ref.:
14.6.2

14 : Silicates not Containing Aluminum
6 : Silicates of Ca with alkali or Mg or both

Mineral SymbolsHide

As of 2021 there are now IMA–CNMNC approved mineral symbols (abbreviations) for each mineral species, useful for tables and diagrams.

Please only use the official IMA–CNMNC symbol. Older variants are listed for historical use only.

SymbolSourceReference
PctIMA–CNMNCWarr, L.N. (2021). IMA–CNMNC approved mineral symbols. Mineralogical Magazine, 85(3), 291-320. doi:10.1180/mgm.2021.43
PctKretz (1983)Kretz, R. (1983) Symbols of rock-forming minerals. American Mineralogist, 68, 277–279.
PctSiivolam & Schmid (2007)Siivolam, J. and Schmid, R. (2007) Recommendations by the IUGS Subcommission on the Systematics of Metamorphic Rocks: List of mineral abbreviations. Web-version 01.02.07. IUGS Commission on the Systematics in Petrology. download
PctWhitney & Evans (2010)Whitney, D.L. and Evans, B.W. (2010) Abbreviations for names of rock-forming minerals. American Mineralogist, 95, 185–187 doi:10.2138/am.2010.3371
PctThe Canadian Mineralogist (2019)The Canadian Mineralogist (2019) The Canadian Mineralogist list of symbols for rock- and ore-forming minerals (December 30, 2019). download

Pronunciation of PectoliteHide

Pronunciation:
PlayRecorded byCountry
Jolyon RalphUnited Kingdom

Physical Properties of PectoliteHide

Lustre:
Sub-Vitreous, Silky
Transparency:
Transparent, Translucent
Colour:
Colourless, white, pale pink, greenish, pale blue
Streak:
White
Hardness:
4½ - 5 on Mohs scale
Tenacity:
Brittle
Cleavage:
Perfect
on {100} and {001}
Fracture:
Irregular/Uneven
Comment:
Tough when compact.
Density:
2.84 - 2.9 g/cm3 (Measured)    2.87 g/cm3 (Calculated)

Optical Data of PectoliteHide

Type:
Biaxial (+)
RI values:
nα = 1.594 - 1.610 nβ = 1.603 - 1.614 nγ = 1.631 - 1.642
2V:
Measured: 50° to 63°, Calculated: 42° to 60°
Max Birefringence:
δ = 0.037
Image shows birefringence interference colour range (at 30µm thickness)
and does not take into account mineral colouration.
Surface Relief:
Moderate
Dispersion:
r > v weak to very strong
Optical Extinction:
X ∧ c = 10°-19°; Y ∧ a = 10°-16°; Z ∧ b = 2°.

Chemistry of PectoliteHide

Mindat Formula:
NaCa2Si3O8(OH)
Elements listed:
Ca, H, Na, O, Si - search for minerals with similar chemistry
Common Impurities:
K,Fe,Mg,Al,H2O

Chemical AnalysisHide

Oxide wt%:
 124
SiO254.21 %53.87 %53.86 %
Mn2O3*0.06 % % %
MnO*1.04 %1.51 % %
CaO32.20 %31.93 %32.81 %
SrO0.22 %0.16 %0.01 %
Na2O9.03 %8.76 %8.64 %
Li2O (est. stoichiometry0.22 %0.28 % %
H2O (by stoichiometry)2.70 %2.69 %2.67 %
P2O50.02 %0.03 %0.03 %
ZrO20.04 %0.01 % %
Fe2O3*0.01 % % %
NiO0.01 % % %
MgO0.02 %0.03 %0.02 %
K2O0.01 %0.01 %0.08 %
Cr2O3 %0.01 % %
FeO* %0.03 %0.31 %
SO3 % %0.10 %
Al2O3 % %0.01 %
Ga2O3 % %0.01 %
V2O3 % %0.02 %
MnO % %0.80 %
PbO % %0.01 %
Total:99.79 %99.32 %99.38 %
Empirical formulas:
Sample IDEmpirical Formula
1(Na0.94Li~0.05?Sr0.01)(Ca1.91Mn2+0.05Na0.03)[Si3.00O8(OH)]
2(Na0.93Li~0.06?Sr0.01)(Ca1.91Mn2+0.07Na0.02)[Si3.00O8(OH)]
4(Na0.94Ca0.03K0.01)(Ca1.94Mn2+0.04Fe2+0.01)[Si3.02O8(OH)]
Sample references:
IDLocalityReferenceNotes
1N'Chwaning III Mine, N'Chwaning Mines, Joe Morolong Local Municipality, John Taolo Gaetsewe District Municipality, Northern Cape, South Africa
Frank K. Mazdab collection; sample FKM-173; https://www.rockptx.com/fkm-151-to-fkm-175/#FKM-173
weakly zoned pectolite, analysis of rim displaying bright yellow cathodoluminescence. H2O calculated from stoichiometry. Estimated minor Li2O added to improve stoichiometry, but should be verified by ICP-MS or SIMS. *Fe3+/∑Fe and Mn3+/∑Mn calculated by charge balance.
2  "  "
Frank K. Mazdab collection; sample FKM-173; https://www.rockptx.com/fkm-151-to-fkm-175/#FKM-173
weakly zoned pectolite, analysis of core displaying pale yellow cathodoluminescence. H2O calculated from stoichiometry. Estimated minor Li2O added to improve stoichiometry, but should be verified by ICP-MS or SIMS. *Fe3+/∑Fe and Mn3+/∑Mn calculated by charge balance.
4North Wilson pit, Union Carbide Mine, Wilson Springs, Garland County, Arkansas, USA
Frank K. Mazdab collection; sample FKM-192; https://www.rockptx.com/fkm-176-to-fkm-200/#FKM-192
observed as rims around some wollastonite grains; note that pectolite was not observed visually in the hand sample. Normalized to ∑(cations) = 6. *Fe3+/∑Fe calculated by charge balance; H2O calculated by stoichiometry.

Crystallography of PectoliteHide

Polytype:
Formula:
Crystal System:
Class (H-M)
Space Group:
Space Group Setting:
Cell Parameters:
Ratio:
Unit Cell Volume (calc):
Z:
Pectolite-1APectolite-M2abc
 NaCa2[HSi3O9]
Triclinic  
1 - Pinacoidal 
P1 
  
a = 7.980(1) Å, b = 7.023(1) Å, c = 7.018(1) Å
α = 90.54(1)°, β = 95.14(1)°, γ = 102.55(1)°
a:b:c = 1.136 : 1 : 0.999 
V 382.20 ų
(Calculated from Unit Cell)		 
  

Crystal StructureHide

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IDSpeciesReferenceLinkYearLocalityPressure (GPa)Temp (K)
0010648PectolitePrewitt C T (1967) Refinement of the structure of pectolite, Ca2NaHSi3O9 Zeitschrift fur Kristallographie 125 298-3161967Erie railroad cut, Bergen Hill, New Jersey, USA0293
CIF Raw Data - click here to close

X-Ray Powder DiffractionHide

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Radiation - Copper Kα
Data Set:
Data courtesy of RRUFF project at University of Arizona, used with permission.
Powder Diffraction Data:
d-spacingIntensity
2.921 Å(100)
3.10 Å(80)
3.90 Å(60)
3.33 Å(60b)
3.28 Å(60b)
2.739 Å(60)
2.600 Å(60)
Comments:
Bergen Hill, New Jersey, USA. Data from Hildebrand (1953).

Geological EnvironmentHide

Paragenetic Mode(s):
Paragenetic ModeEarliest Age (Ga)
Stage 3a: Earth’s earliest Hadean crust>4.50
7 : Ultramafic igneous rocks
10 : Basalt-hosted zeolite minerals
Stage 3b: Earth’s earliest hydrosphere>4.45
13 : Hadean serpentinization
Near-surface Processes
23 : Subaerial aqueous alteration by non-redox-sensitive fluids (see also #47)
High-𝑇 alteration and/or metamorphism
31 : Thermally altered carbonate, phosphate, and iron formations
Stage 4b: Highly evolved igneous rocks>3.0
35 : Ultra-alkali and agpaitic igneous rocks
Stage 5: Initiation of plate tectonics<3.5-2.5
40 : Regional metamorphism (greenschist, amphibolite, granulite facies)
Geological Setting:
Primary mineral in nepheline syenites. Hydrothermal mineral in cavities in basalts and diabases. In serpentinites and peridotites.

Type Occurrence of PectoliteHide

Synonyms of PectoliteHide

Other Language Names for PectoliteHide

Varieties of PectoliteHide

LarimarA trade name for a bluish massive pectolite found in the Dominican Republic and exploited as a gem material.

Originally described from Filipinas Larimar Mine, Los Checheses, Sierra de Baoruco, Barahona Province, Dominican Republic.
Manganese-bearing PectoliteA manganese-bearing variety of pectolite.

Relationship of Pectolite to other SpeciesHide

Member of:
Wollastonite Group
Other Members of this group:
Barrydawsonite-(Y)Na1.5Y0.5CaSi3O8(OH)Mon. 2/m : P21/b
BustamiteCaMn2+(Si2O6)Tric. 1 : P1
CascanditeCaScSi3O8(OH)Tric. 1
DalnegorskiteCa5Mn(Si3O9)2Tric. 1 : P1
FerrobustamiteCaFe2+(Si2O6)Tric. 1
MendigiteMn2Mn2MnCa(Si3O9)2Tric. 1 : P1
MurakamiiteLiCa2Si3O8(OH)Tric. 1 : P1
SchizoliteNaCaMnSi3O8(OH)Tric. 1 : P1
SeranditeNaMn2+2Si3O8(OH)Tric. 1 : P1
TanohataiteLiMn2Si3O8(OH)Tric. 1 : P1
VistepiteSnMn4B2Si4O16(OH)2Tric. 1 : P1
WollastoniteCa3(Si3O9)Tric. 1 : P1
Forms a series with:
SeranditePectolite-Serandite Series

Common AssociatesHide

Associated Minerals Based on Photo Data:
144 photos of Pectolite associated with PrehniteCa2Al2Si3O10(OH)2
120 photos of Pectolite associated with CalciteCaCO3
81 photos of Pectolite associated with Fluorapophyllite-(K)KCa4(Si8O20)(F,OH) · 8H2O
64 photos of Pectolite associated with Apophyllite GroupAB4[Si8O22]X · 8H2O
59 photos of Pectolite associated with GrossularCa3Al2(SiO4)3
56 photos of Pectolite associated with NatroliteNa2Al2Si3O10 · 2H2O
52 photos of Pectolite associated with DatoliteCaB(SiO4)(OH)
44 photos of Pectolite associated with AegirineNaFe3+Si2O6
44 photos of Pectolite associated with VilliaumiteNaF
41 photos of Pectolite associated with PyriteFeS2

Related Minerals - Strunz-mindat GroupingHide

9.DG.CalcinaksiteKNaCa(Si4O10) · H2OTric. 1 : P1
9.DG.Barrydawsonite-(Y)Na1.5Y0.5CaSi3O8(OH)Mon. 2/m : P21/b
9.DG.ParatobermoriteCa4(Al0.5Si0.5)2Si4O16(OH)(H2O)2 · (Ca · 3H2O)Mon. 2/m
9.DG.AlvesiteNaKZrSi6O15 · 2H2OOrth. mmm (2/m 2/m 2/m)
9.DG.02SteedeiteNaMn2[Si3BO9](OH)2Tric. 1 : P1
9.DG.02NolzeiteNaMn2[Si3BO9](OH)2 · 2H2OTric. 1 : P1
9.DG.05BustamiteCaMn2+(Si2O6)Tric. 1 : P1
9.DG.05FerrobustamiteCaFe2+(Si2O6)Tric. 1
9.DG.05SeranditeNaMn2+2Si3O8(OH)Tric. 1 : P1
9.DG.05WollastoniteCa3(Si3O9)Tric. 1 : P1
9.DG.05Wollastonite-1ACaSiO3Tric. 1 : P1
9.DG.05TanohataiteLiMn2Si3O8(OH)Tric. 1 : P1
9.DG.05SchizoliteNaCaMnSi3O8(OH)Tric. 1 : P1
9.DG.05MurakamiiteLiCa2Si3O8(OH)Tric. 1 : P1
9.DG.05DalnegorskiteCa5Mn(Si3O9)2Tric. 1 : P1
9.DG.07CascanditeCaScSi3O8(OH)Tric. 1
9.DG.08Plombièrite[Ca4Si6O16(OH)2 · 2H2O] · (Ca · 5H2O)Orth.
9.DG.10Clinotobermorite[Ca4Si6O17 · 2H2O] · (Ca · 3H2O)Mon.
9.DG.10RiversideiteCa5(HSi3O9)2 · 2H2OOrth.
9.DG.10TobermoriteCa4Si6O17(H2O)2 · (Ca · 3H2O)Mon. 2 : P21
9.DG.12JusiteNa2Ca15Al4Si16O54 · 17H2O
9.DG.12KenotobermoriteCa4Si6O15(OH)2(H2O)2 · 3H2OMon.
9.DG.15FoshagiteCa4(Si3O9)(OH)2Tric. 1 : P1
9.DG.20JenniteCa9(Si3O9)2(OH)8 · 8H2OTric. 1 : P1
9.DG.20KameneviteK2TiSi3O9 · H2OOrth. 2 2 2 : P21 21 21
9.DG.25ParaumbiteK3Zr2H(Si3O9)2 · nH2OOrth. mm2
9.DG.25UmbiteK2(Zr,Ti)Si3O9 · H2OOrth. 2 2 2 : P21 21 21
9.DG.30SørenseniteNa4SnBe2Si6O16(OH)4Mon. 2/m : B2/b
9.DG.32Escheite Ca2NaMnTi5[Si12O34]O2(OH)3 · 12H2OOrth. mm2 : Ama2
9.DG.35XonotliteCa6(Si6O17)(OH)2Mon. 2/m : B2/m
9.DG.40HillebranditeCa2(SiO3)(OH)2Orth. mmm (2/m 2/m 2/m) : Cmcm
9.DG.45ZoriteNa8(Ti,Nb)5(Si6O17)2(OH,O)5 · 14H2OOrth.
9.DG.45ChivruaiiteCa4(Ti,Nb)5(Si6O17)2(OH,O)5 · 13-14H2OOrth. mmm (2/m 2/m 2/m) : Cmmm
9.DG.50Haineaultite(Na,Ca)5Ca(Ti,Nb)5(Si6O17)2(OH,F)8 · 5H2OOrth. 2 2 2 : C2 2 2
9.DG.55EpididymiteNa2Be2Si6O15 · H2OOrth. mmm (2/m 2/m 2/m) : Pnma
9.DG.60EudidymiteNa2Be2Si6O15 · H2OMon. 2/m : B2/b
9.DG.65ElpiditeNa2ZrSi6O15 · 3H2OOrth.
9.DG.65PatyniteNaKCa4[Si9O23]Tric. 1 : P1
9.DG.67WhelaniteCu2+2Ca6[Si6O17(OH)](CO3)(OH)3 · 2H2OOrth. mm2 : Pnn2
9.DG.70Fenaksite(K,Na)4(Fe,Mn)2(Si4O10)2(OH,F)Tric. 1 : P1
9.DG.70LitidioniteCuNaKSi4O10Tric. 1 : P1
9.DG.70ManaksiteKNaMnSi4O10Tric. 1 : P1
9.DG.70YusupoviteNa2Zr(Si6O15) · 2.5H2OMon. 2/m : B2/m
9.DG.70EnricofrancoiteKNaCaSi4O10Tric. 1 : P1
9.DG.75TinaksiteK2Na(Ca,Mn2+)2TiO[Si7O18(OH)]Tric.
9.DG.75TokkoiteK2Ca4[Si7O18(OH)](OH,F)Tric.
9.DG.75SenkevichiteCsKNaCa2TiO[Si7O18](OH)Tric. 1 : P1
9.DG.80CanasiteK3Na3Ca5Si12O30(OH)4Mon. m : Bm
9.DG.80FluorcanasiteK3Na3Ca5Si12O30F4 · H2OMon. m : Bm
9.DG.85MiseriteK1.5-x(Ca,Y,REE)5(Si6O15)(Si2O7)(OH,F)2 · yH2OTric.
9.DG.90FrankameniteK3Na3Ca5(Si12O30)(F,OH)4 · H2OTric. 1 : P1
9.DG.92Charoite(K,Sr)15-16(Ca,Na)32[Si6O11(O,OH)6]2[Si12O18(O,OH)12]2[Si17O25(O,OH)18]2(OH,F)4 · ~3H2OMon. 2/m : P21/m
9.DG.95YuksporiteK4(Ca,Na)14(Sr,Ba)2(◻,Mn,Fe)(Ti,Nb)4(O,OH)4(Si6O17)2(Si2O7)3(H2O,OH)3Mon. 2/m : P21/m
9.DG.97Eveslogite(Na,K,Ca,Sr,Ba)48 [(Ti,Nb,Mn,Fe2+)12Si48O144(OH)12](F,OH,Cl)14Mon. 2/m : P2/m

Other InformationHide

Notes:
May be triboluminescent.
Health Risks:
The white needles of pectolite are sharp and stiff and easily penetrate the skin. Once embedded they are invisible and brittle and difficult to remove, often very painful. Handle with caution at all times. Do not rub your hands after handling. Rinse hands in a strong stream of water before handling anything else, especially food.

Pectolite in petrologyHide

An essential component of rock names highlighted in red, an accessory component in rock names highlighted in green.

Internet Links for PectoliteHide

References for PectoliteHide

Reference List:
von Kobell, F. (1828) Ueber den Pektolith. Archiv für die Gesammte Naturlehre: 13: 385-393.
Whitney, J.D. (1860) On the Chemical Composition of Pectolite. American Journal of Science and Arts: 29(86): 205.
Forster-Heddle, M. (1893) On Pectolite and Okenite from New Localities: the former with New Appearances. Transactions of the Geological Society of Glasgow: 9(2): 241–255.
Clarke, F.W., Steiger, G. (1899) Experiments relative to the Constitution of Pectolite, Pyrophyllite, Calamine, and Analcite. American Journal of Science: 8(46): 245-257.
Peacock, M.A. (1935): On pectolite. Zeitschrift für Kristallographie, 90, 97–111.
Hildebrand, F.A. (1953) Minimizing the effects of preferred orientation in X-ray powder diffraction patterns. American Mineralogist, 38, 1051-1056.
Schaller, Waldemar T. (1955) The pectolite-schizolite-serandite series. American Mineralogist, 40 (11-12) 1022-1031
Buerger, M.J. (1956) The determination of the crystal structure of pectolite, Ca2NaHSi3O9. Zeitschrift für Kristallographie: 108: 248-262.
Prewitt, C.T. (1967) Refinement of the structure of pectolite, Ca2NaHSi3O9. Zeitschrift für Kristallographie: 125: 298-316.
Takeuchi, Y. & Kudoh, Y. (1977) Hydrogen bonding and cation ordering in Magnet Cove pectolite. Zeitschrift für Kristallographie: 146: 281-292.
Ohashi, Yoshikazu, Finger, Larry W. (1978) The role of octahedral cations in pyroxenoid crystal chemistry. I. Bustamite, wollastonite, and the pectolite-schizolite-serandite series. American Mineralogist, 63 (3-4) 274-288
Fleischer, Michael, Cabri, Louis J., Chao, George Y., Pabst, Adolf (1978) New Mineral Names. American Mineralogist, 63 (3-4) 424-427
Liebau, F. (1980) The role of cationic hydrogen in pyroxenoid crystal chemistry. American Mineralogist: 65: 981-985.
Smith, B.H.S., Skinner, E.M., Clement, C.R. (1983) Further data on the occurrence of pectolite in kimberlite. Mineralogical Magazine: 47(342): 75-78.
Woodruff, R.E., Fritsch, E. (1989) Blue pectolite from the Dominican Republic. Gems & Gemology: 25(4): 216-225.
Hammer, Vera M. F., Libowitzky, Eugen, Rossman, George R. (1998) Single-crystal IR spectroscopy of very strong hydrogen bonds in pectolite, NaCa2[Si3O8(OH)], and serandite, NaMn2[Si3O8(OH)]. American Mineralogist, 83 (5) 569-576 doi:10.2138/am-1998-5-617
Rozhdestvenskaya, I.V., Vasilieva, V.A. (2014) Cation ordering and structural deformations in pectolite HNaCaSi3O9 - serandite HNaMn2Si3O9. Journal of Structural Chemistry: 55(7): 1268-1276.
Frost, R.L., López, A., Theiss, F.L., Romano, A.W., Scholz, R. (2015) A vibrational spectroscopic study of the silicate mineral pectolite–NaCa2Si3O8 (OH). Spectrochimica Acta Part A: 134: 58-62.
Kowalczyk, J., Natkaniec-Nowak, L., Wachowiak, J. (2015) Larimar–a unique pectolite rock from the Dominican Republic. Geology, Geophysics and Environment: 41(1): 101-101.
Nagashima, Mariko, Imaoka, Teruyoshi, Fukuda, Chihiro, Pettke, Thomas (2018) Relationship between cation substitution and hydrogen-bond system in hydrous pyroxenoids with three-periodic single-chain of SiO4 tetrahedra: pectolite, murakamiite, marshallsussmanite, serandite and tanohataite. European Journal of Mineralogy, 30 (3) 451-463 doi:10.1127/ejm/2018/0030-2744
Lussier, Aaron J., Grice, Joel D., Friis, Henrik, Poirier, Glenn G. (2021) Insights into the crystal chemistry of the serandite–schizolite–pectolite series. The Canadian Mineralogist, 59 (3) 551-572 doi:10.3749/canmin.1900097
forum.amiminerals.it (n.d.) http://forum.amiminerals.it/viewtopic.php?f=5&t=16601&sid=caa89199acc501d3dcefb03b0478b3d8
(2023) Pectolite. Handbook of Mineralogy. Mineralogical Society of America

Localities for PectoliteHide

This map shows a selection of localities that have latitude and longitude coordinates recorded. Click on the symbol to view information about a locality. The symbol next to localities in the list can be used to jump to that position on the map.

Locality ListHide

- This locality has map coordinates listed. - This locality has estimated coordinates. ⓘ - Click for references and further information on this occurrence. ? - Indicates mineral may be doubtful at this locality. - Good crystals or important locality for species. - World class for species or very significant. (TL) - Type Locality for a valid mineral species. (FRL) - First Recorded Locality for everything else (eg varieties). Struck out - Mineral was erroneously reported from this locality. Faded * - Never found at this locality but inferred to have existed at some point in the past (e.g. from pseudomorphs).

All localities listed without proper references should be considered as questionable.
Argentina
 
  • Neuquén Province
    • Los Lagos Department
Vattuone et al. (2001)
Australia
 
  • New South Wales
    • Cumberland County
      • Prospect
Tschernich (1992) +1 other reference
    • Forbes Co.
      • Grenfell
Australian Journal of Earth Sciences +6 other references
    • Mootwingee Co.
R Bottrill
  • Queensland
    • Somerset Region
Carr
  • Tasmania
    • Dorset municipality
      • Waterhouse district
Everard
    • Huon Valley municipality
      • Huon-Channel region
Bottrill +1 other reference
Bottrill (2021)
        • Weld river district
Bottrill et al. (2008)
Brazil
 
  • Minas Gerais
    • Poços de Caldas
Azzi (2019)
Horváth
Andrezza Azzi et al. (2018) +2 other references
  • Santa Catarina
G Traversa et al (1994) +1 other reference
  • São Paulo
www.igc.usp.br (2003)
Canada
 
  • British Columbia
    • Golden Mining Division
Locock (1994)
  • New Brunswick
    • Charlotte Co.
      • Saint Patrick Parish
Donald Doell
  • Newfoundland and Labrador
    • Labrador
Tappe et al. (2005)
      • North Red Wine Pluton
Mitchell et al. (2015)
Curtis et al. (1977) +1 other reference
GSC database locality No. 4100 +1 other reference
Cámara et al. (2013)
  • Northwest Territories
    • Blachford Lake alkaline complex
SHEARD et al. (2012)
Anton R. Chakhmouradian and Roger H. Mitchell (2001)
    • North Slave Region
      • Blachford Lake alkaline complex
        • Thor Lake syenite complex
Sheard (2010) +1 other reference
  • Nova Scotia
    • Cape Breton Co.
      • Scotch Lake
Collected by Don Doell
  • Nunavut
    • Coppermine River area
Roach et al. (1998)
    • Qikiqtaaluk Region
      • Baffin Island
EurJourMin 13 (2001)
  • Ontario
162-165. +1 other reference
    • Thunder Bay District
      • Killala Lake Area
Berger et al. (2009)
      • MacGregor Township
Sabina (1991)
  • Québec
    • Abitibi-Témiscamingue
      • Témiscamingue RCM
        • Les Lacs-du-Témiscamingue
Ansell et al. (1980)
    • Chaudière-Appalaches
      • Les Appalaches RCM
        • Saint-Joseph-de-Coleraine
Canadian Museum of Nature & Horvath ...
Museum Thetford Mines collection
        • Thetford Mines
GSC collection specimen
          • Black Lake
Canadian Museum of Nature collection
GAUDARD (1993)
GAUDARD (1993)
          • Pontbriand
Thetford Mines Museum specimen
    • Estrie
      • Les Sources RCM
        • Val-des-Sources
179-181. +2 other references
    • Gaspésie-Îles-de-la-Madeleine
      • La Haute-Gaspésie RCM
Wallace et al. (1990) +1 other reference
    • Laurentides
      • Argenteuil RCM
        • Grenville-sur-la-Rouge
Bourdeau (2008)
      • Deux-Montagnes RCM
GOLD et al. (1986)
    • Montérégie
      • La Vallée-du-Richelieu RCM
        • Mont Saint-Hilaire
166-175. +3 other references
      • Lajemmerais RCM
        • Varennes & St-Amable
          • Saint-Amable sill
Horváth et al. (1998)
Miller (2021)
China
 
  • Liaoning
    • Dandong
      • Kuandian County
        • Saima complex
- (1978)
  • Sichuan
    • Liangshan Yi
      • Mianning County
Orris et al. (2002)
  • Zhejiang
    • Hangzhou
      • Chun'an County
Letian Du and Wenguang Wang (2012) +1 other reference
Czech Republic
 
  • Central Bohemian Region
    • Beroun District
      • Hlásná Třebaň
Tasáryová et al. (2014)
  • Liberec Region
    • Semily District
      • Košťálov
Duda
  • Moravian-Silesian Region
    • Karviná District
      • Karviná
Rusek P. (květen-srpen 1960) +1 other reference
  • South Moravian Region
    • Brno-Country District
Houzar +1 other reference
  • Ústí nad Labem Region
    • Děčín District
Pelikan (1902)
www.geocities.com/Smula.geo
  • Vysočina Region
    • Havlíčkův Brod District
      • Krucemburk
Anthony et al. (2016)
    • Žďár nad Sázavou District
      • Věžná
Černý P.
Dosbaba et al. (2012)
Dominican Republic
 
  • Barahona Province
    • La Ciénaga
Alfredo Petrov field observations
    • Sierra de Baoruco
      • Los Checheses
Robert Woodruff and Emmanuel Fritsch (1989) +1 other reference
DR Congo
 
  • North Kivu
    • Beni Territory
      • Bashu
USGS Open-File Report 02–156–A +4 other references
Faroe Islands
 
  • Norðoyar Region
    • Borðoy
      • Depil
Färber (n.d.)
Finland
 
  • Lapland
    • Ranua
Mutanen
  • North Ostrobothnia
    • Kuusamo
Lehijärvi +2 other references
  • South Karelia
    • Lappeenranta
Hytönen (1999)
France
 
  • Grand Est
    • Bas-Rhin
      • Molsheim
        • Saint-Nabor
Wittern et al. (Cologne)
    • Vosges
      • Saint-Dié-des-Vosges
        • Raon-l'Étape
Wittern et al. (Cologne)
  • Occitanie
    • Aude
      • Narbonne
        • Fitou
Azambre et al. (1992)
Germany
 
  • Baden-Württemberg
    • Freiburg Region
      • Breisgau-Hochschwarzwald
        • Bötzingen
Fricke et al. (1988) +3 other references
        • Buchenbach
Walenta (1992)
      • Ortenaukreis
        • Haslach im Kinzigtal
          • Haslach im Kinzigtal
Weiß (1990)
Weisenberger et al. (2014)
  • Hesse
    • Giessen Region
      • Lahn-Dill-Kreis
        • Dillenburg
          • Oberscheld
Mineralienwelt.de +2 other references
      • Marburg-Biedenkopf
        • Bad Endbach
          • Hartenrod
Weiß (1990)
        • Steffenberg
Weiß (1990)
          • Steinperf
Weiß (1990)
  • North Rhine-Westphalia
    • Arnsberg
      • Hochsauerlandkreis
        • Meschede
          • Remblinghausen
Wittern (2001)
        • Winterberg
          • Hildfeld
Weiß (1990)
          • Silbach
Weiß (1990)
  • Rhineland-Palatinate
    • Donnersbergkreis
      • Nordpfälzer Land
        • Waldgrehweiler
Poser et al. (2004)
    • Kaiserslautern
      • Otterbach-Otterberg
        • Niederkirchen
[Pectolite-M2abc] W.F.Muller (1976)
    • Kusel
      • Lauterecken-Wolfstein
        • Hefersweiler
Lehmann (1881)
        • Jettenbach
www.mgas.de (2003)
        • Kreimbach-Kaulbach
Weiß (1990) +1 other reference
  • Saxony
    • Sächsische Schweiz-Osterzgebirge
      • Sebnitz
Pfeiffer (1994) +2 other references
Greece
 
  • Eastern Macedonia and Thrace
    • Rhodope
      • Maroneia-Sapes
Mineral. Petrol. 95 (2009)
Pelletier et al. (2008)
Greenland
 
  • Avannaata
    • Nuussuaq Peninsula
Benson (1940)
  • Kujalleq
    • Igaliku Complex
Jones (1980) +1 other reference
Petersen (2001)
Bøggild (1953)
        • Head of Kangerluarsuk
          • Lilleelv
Sørensen (1962)
Borst (2014)
Danoe et al. (1959)
Friis et al. (2004)
        • Kvanefjeld deposit
O.T.Ljøstad specimen & photo (photo-259573)
Petersen et al. (2005)
Petersen et al. (2002)
Lapis 29 (5)
Petersen et al. (2004)
      • Tunulliarfik Fjord
Sørensen (1962)
Boeggild (1953)
Sørensen (1962) +1 other reference
Boeggild (1953)
    • Illutalik Island
Upton et al. (1978)
  • Sermersooq
    • Kangerlussuaq Fjord
Petersen et al. (1985)
      • Prinsen af Wales Bjerge
www.koeln.netsurf.de (1999)
Hungary
 
  • Baranya County
    • Pécs District
      • Hosszúhetény
www.geomania.hu
www.geomania.hu
India
 
  • Andhra Pradesh
    • Anantapur District
Gupta et al. (1986, September) +2 other references
      • Wajrakarur kimberlite field
        • Wajrakarur–Lattavaram cluster
Kaur et al. (2013)
  • Madhya Pradesh
    • Panna District
      • Panna
        • Panna Mines
Scott Smith +2 other references
  • Tamil Nadu
    • Tirupattur District
Vladykin et al. (2008)
  • West Bengal
    • Purulia District
Chakrabarty et al. (2011) +3 other references
Ireland
 
  • Leinster
    • Louth County
      • Carlingford
Nockolds et al. (1947) +1 other reference
Italy
 
  • Aosta Valley
    • Arvier
Vineis (1973)
    • Montjovet
Cotta Ramusino et al. (1973) +2 other references
C.M. Gramaccioli (1975)
  • Lazio
    • Rieti Province
      • Rieti
        • Santa Rufina
Sabatini (1903) +5 other references
  • Liguria
    • Genoa
      • Tiglieto
Antofilli +1 other reference
    • La Spezia Province
      • Borghetto di Vara
Mineralogical Magazine: 60: 369-374. +1 other reference
  • Lombardy
    • Sondrio Province
      • Lanzada
        • Franscia
Bedognè et al. (1993)
Lapis (10)
  • Piedmont
    • Alessandria Province
      • Fraconalto
Antofilli
      • Voltaggio
Piccoli et al. (2007)
    • Cuneo Province
Andrea Opicelli Collection
  • Trentino-Alto Adige (Trentino-South Tyrol)
    • South Tyrol
      • Sarentino Valley (Sarn valley)
        • Pénnes Valley (Pensertal)
Exel (1987)
Simone Conti Collection
    • Trento Province (Trentino)
      • Ala
        • Pilcante
Raman Spectroscopy
Bortolozzi (n.d.)
      • Brentonico
Gasser (1913) +1 other reference
      • Campitello di Fassa
        • Duron Valley
Ferretti et al. (2013)
Kobell Kastner's Arch. xiii
      • Mori
Boscardin M. (1993)
Exel (1987)
      • Predazzo
        • Latemar Group
Giulia Zanoni (1980)
      • San Giovanni di Fassa
        • San Nicolò Valley
- (n.d.) +3 other references
Ferretti et al. (2013)
Ferretti et al. (2013)
  • Tuscany
    • Pisa Province
      • Castelnuovo di Val di Cecina
Brizzi et al. (3)
  • Veneto
    • Belluno Province
      • Taibon Agordino
        • San Lucano Valley
Giordano (2008) +2 other references
    • Padova Province
      • Galzignano Terme
Cámara et al. (2012) +1 other reference
    • Verona Province
      • San Giovanni Ilarione
Boscardin (2014)
Mattioli et al. (2008) +1 other reference
Mattioli et al. (2008) +1 other reference
Boscardin (2014)
    • Vicenza Province
      • Altavilla Vicentina
"Minerali del Vicentino - La natrolite" ...
      • Gambellara
        • S. Marco hill
"Minerali del Vicentino - La natrolite" ...
      • San Vito di Leguzzano-Schio
Boscardin M. et al. (Vicenza)
      • San Vito di Leguzzano
Boscardin et al. (2000)
Boscardin et al. (2000) +2 other references
      • Schio
        • Tretto
          • Val Munari
            • Contrade Maglio-Pornaro
Boscardin et al. (2011) +1 other reference
Japan
 
  • Aichi Prefecture
    • Shinshiro city
Matsubara et al. (1979)
  • Chiba Prefecture
    • Awa District
      • Tawara-mura
    • Kamogawa city
Dr. Kameki Kinoshita collection (curated at Geological Survey of Japan)
    • Minamiboso City
      • Tomiyama-machi
Dr. Kameki Kinoshita collection (curated at Geological Survey of Japan)
  • Ehime Prefecture
    • Ochi District
Mineralogical Journal Vol. 8 (1975) +1 other reference
  • Hiroshima Prefecture
    • Shoubara City
      • Kushiro
Hiromi Yano et al. (2011)
  • Hokkaidō Prefecture
    • Kamikawa Subprefecture
      • Nakagawa (Teshio) District
Yamada (2004)
    • Sorachi Subprefecture
      • Uryū District
Sadanaga et al. (1974)
  • Kochi Prefecture
    • Kochi City
      • Rendai
Mineralogical Journal Vol. 13 (1986)
  • Mie Prefecture
    • Toba City
Petrov (n.d.)
Go Ito
  • Miyazaki Prefecture
    • Nishiusuki District
      • Takachiho
pers. comm. Kotaro Watanabe
  • Niigata Prefecture
Shi et al. (2012)
      • Ōmi
Hiroaki Tano specimen
Alluvial cobbles in innumerable ... +1 other reference
  • Okayama Prefecture
    • Niimi City
Shi et al. (2012)
Kenya
 
  • Trans-Nzoia County
    • Mount Elgon
Bowell et al. (1996)
Kyrgyzstan
 
  • Batken Region
    • Batken District
Pautov et al. (2013)
Lesotho
 
  • Mokhotlong District
F. J. Kruger (1982)
Madagascar
 
  • Diana
    • Ambanja
      • Antsirabe
Lacroix (1922) +1 other reference
Mexico
 
  • Durango
    • Mapimí Municipality
      • Mapimí
Morocco
 
  • Dakhla-Oued Ed-Dahab Region
    • Aousserd Province
Bea et al. (2013)
  • Drâa-Tafilalet Region
    • Midelt Province
      • Midelt Cercle
        • Aït Oufella Caïdat
          • Amersid
  • Marrakesh-Safi Region
    • Al Haouz Province
      • Amizmiz Cercle
        • Guedmioua Caïdat
          • Azgour (Azegour)
El Khalile et al. (2023)
  • Rabat-Salé-Kénitra Region
    • Khémisset Province
      • Khémisset Cercle
        • Ait Mimoune Caïdat
          • El Hammam
Econ Geol (1989)
      • Oulmès Cercle
Ph. M. Sonnet : "Burtite
Myanmar
 
  • Kachin State
    • Mohnyin District
      • Hpakant Township (Hpakan; Phakant; Phakan)
Shi et al. (2012)
Shi et al. (2012)
Namibia
 
  • Khomas Region
    • Windhoek Rural
      • Aris
L. Horváth collection (XRD-analysed) +3 other references
Koller F et al. (2014)
New Zealand
 
  • Northland Region
    • Kaipara District
Baker et al. (1980)
Baker et al. (1980)
  • Southland Region
    • Southland District
      • Livingstone Mountains
Craw et al. (1979)
  • Waikato Region
    • Waitomo District
      • Piopio
Leach et al. (1977)
Norway
 
  • Agder
    • Risør
      • Søndeled
Breivik (2001)
Larsen et al. (2010)
  • Møre og Romsdal
    • Ørsta
Bryhni (1993)
  • Oslo
    • Oslomarka
[Anonymous (H.-J. Berg ?)
Andersen (1981)
  • Telemark
    • Porsgrunn
      • Auenlandet
        • Sagåsen
Larsen et al. (2005)
      • Risøya
Berge (n.d.)
Engvoldsen et al. (1991)
      • Slevolden
Burvald (1993)
  • Troms og Finnmark
    • Hasvik
      • Sørøya
Lars O. Kvamsdal +1 other reference
Nordrum (2005)
  • Vestfold
    • Larvik
      • Brunlanes
Berge (n.d.)
      • Hedrum
        • Lågendalen
Andersen (1993)
      • Tjølling
        • Håkestad
Nordrum (2003)
        • Stålaker
Larsen et al. (2010)
      • Tvedalen
Berge (n.d.)
    • Sandefjord
      • Vesterøya
Berge et al. (1980) +1 other reference
Pakistan
 
  • Balochistan
    • Killa Saifullah District
Kakar et al. (2013)
    • Pishin District
Ahmed et al. (1990) +1 other reference
Poland
 
  • Lower Silesian Voivodeship
    • Wrocław County
      • Gmina Jordanów Śląski
Lis et al. (1986)
  • Silesian Voivodeship
    • Bielsko County
      • Gmina Jasienica
Włodyka R. 2010: Hydrogarnets from ... +3 other references
    • Zawiercie County
      • Gmina Łazy
        • Rokitno Szlacheckie
Koszowska E. 2002: ...
Romania
 
  • Bihor County
www.researchgate.net (n.d.)
    • Pietroasa
Marincea et al. (2023) +2 other references
  • Harghita County
Hirtopanu (2006) +1 other reference
    • Joseni
Hirtopanu et al. (2013)
Russia
 
  • Aldan Shield
    • Chara and Tokko Rivers Confluence
[Lapis 1993:4 p.13-20]
Pekov (1998)
Vladykin et al. (2018) +1 other reference
Pavel.M. Kartashov (n.d.)
Vorob'yov E.I. (2008)
Konev et al. (1996)
  • Arkhangelsk Oblast
    • Zimny Bereg District
      • Zimny Bereg kimberlite field
        • Zolotitsa occurrence
Sazonova et al. (2015)
  • Buryatia
    • Severo-Baykalsky District
      • Dovyren Highlands
Spiridonov (2020, September)
  • Chukotka Autonomous Okrug
    • Anadyrsky District
Pavel.M. Kartashov (n.d.)
  • Irkutsk Oblast
Vladykin et al. (2008)
Kaneva et al. (2020)
  • Kemerovo Oblast
    • Synzas River
doi.org (n.d.) +1 other reference
  • Khabarovsk Krai
    • Ayan-Maya district
Lennikov et al. (2004)
    • Taikan Ridge
Mandarino (1996)
Pekov (1998)
Pekov (1998)
  • Krasnoyarsk Krai
    • Maimecha and Kotui Rivers Basin
      • Odikhincha massif
Zaitsev et al. (2022)
    • Taymyrskiy Autonomous Okrug
      • Taimyr Peninsula
        • Putoran Plateau
Spiridonov et al. (2008)
Cooper (1997)
  • Murmansk Oblast
Potter et al. (2017)
    • Khibiny Massif
Pekov (1998) +2 other references
        • Astrophyllite Stream
A.N. Labuntsov Mineralogical survey of central parts of Khibina massif (zircon, catapleiite and fersmanite localities) +1 other reference
Pavel.M. Kartashov (n.d.)
Arzamastsev et al. (2008)
Men'shikov (2006)
Pavel.M. Kartashov (n.d.) +1 other reference
Konopleva et al. (2008) +1 other reference
      • Koashva Mt
Arzamastsev et al. (2008)
Arzamastsev et al. (2008)
Arzamastsev et al. (2008)
[World of Stones 95:5-6 +5 other references
ZRMO 138 (2)
World of Stones 95:5-6 +2 other references
Pekov (2003)
American Mineralogist
maurice.strahlen.org (2003) +1 other reference
Am Min 79:1011 +2 other references
        • Rasvumchorr Mine
Pekov (1998)
Pekov I.V. et al. (2010) +1 other reference
      • The Carbonatite Stock in the vicinity of Tul'ilukht Bay
[Mandarino +1 other reference
Pekov (1998)
Am Min 90:271 +1 other reference
Pekov (1998)
Pekov et al. (2003)
Pavel.M. Kartashov (n.d.)
Pavel.M. Kartashov (n.d.) +1 other reference
Pekov (1998)
    • Kovdorsky District
Mikhailova et al. (2015)
N.V. Chukanov et al.: Zap. Vses. Mineral. Obshch. 133 (1)
...
    • Lovozersky District
      • Engporr Mountain
Pavel M. Kartashov analytical data (2013)
Pakhomovsky et al. (2014)
Pekov (2000)
        • Second Eastern Stream
Pekov (2000)
Yakovenchuk et al. (2011)
Pekov et al. (2013)
      • Seidozero Lake
        • Lepkhe-Nel'm Mt
Semenov E.I. (1972)
Arzamastseva et al. (1999) +1 other reference
    • Turii Cape
 ... +3 other references
  • Republic of Karelia
Grokhovskaya et al. (2005)
  • Sverdlovsk Oblast
    • Asbest
Antonov A.A. [Антонов А.А.] (2003)
        • Southern open pit
Chukanov et al. (2016)
South Africa
 
  • Free State
    • Xhariep District Municipality
      • Kopanong Local Municipality
        • Jagersfontein
Bruce Cairncross photo ID 697444
  • Limpopo
    • Mopani District Municipality
      • Ba-Phalaborwa Local Municipality
        • Phalaborwa
Gliddon et al. (1991) +2 other references
    • Sekhukhune District Municipality
      • Makhuduthamaga Local Municipality
USGS Open-File Report 02–156–A +1 other reference
  • North West
    • Bojanala Platinum District Municipality
      • Moses Kotane Local Municipality
Wooley (2001)
    • Dr Ruth Segomotsi Mompati District Municipality
      • Lekwa-Teemane Local Municipality
Cairncross et al. (1995)
  • Northern Cape
    • Frances Baard District Municipality
      • Sol Plaatje Local Municipality
        • Kimberley
F. J. Kruger (1982)
          • KEM JV Mine (Kimberley Ekapa Mining Joint Venture mine; Kimberley Underground mine)
Cairncross photo ID 738550
    • John Taolo Gaetsewe District Municipality
      • Joe Morolong Local Municipality
        • N'Chwaning Mines
Cairncross et al. (1995)
Frank K. Mazdab collection (thin section FKM-173) +1 other reference
Cairncross et al. (1995) +3 other references
    • ZF Mgcawu District Municipality
      • Tsantsabane Local Municipality
        • Postmasburg
Costin et al. (2016)
Costin et al. (2014) +1 other reference
Sweden
 
  • Dalarna County
    • Älvdalen
Magnusson (1923) +2 other references
Magnusson ( 1923)
Magnusson ( 1923)
  • Jönköping County
    • Jönköping
      • Gränna
Adamson (1942) +9 other references
Tranefors et al. (2017)
Adamson (1942)
  • Östergötland County
    • Ödeshög
  • Värmland County
    • Filipstad
      • Långban Ore District
Rocks & Min.: 60:242 +1 other reference
      • Persberg ore district
        • Pajsberg
Gatedal (n.d.)
  • Västernorrland County
    • Kramfors
Sandström (1999)
    • Sundsvall
Sandström et al. (2010)
Tajikistan
 
  • Districts of Republican Subordination
Agakhanov et al. (2005) +3 other references
Tanzania
 
  • Manyara Region
    • Simanjiro District
      • Lelatema Mountains
Rob Lavinsky specimen
UK
 
  • England
    • Cornwall
      • St Keverne
Golley et al. (1995)
        • Porthoustock
Golley et al. (1995)
    • County Durham
      • Forest and Frith
Day (1999)
      • Stanhope
[Specimen in the Natural History Museum
        • Westgate
    • Cumbria
      • Allerdale
        • Embleton
with a note on the origin of the ... +2 other references
      • Eden
        • Mungrisdale
Day (1999)
        • Shap Rural
Day (1999)
    • Northumberland
      • Chollerton
Randall B A O. Dolerite-pegmatites from ... +2 other references
    • West Midlands Metropolitan County
      • Walsall
        • Bentley
[Specimen in the Natural History Museum
  • Northern Ireland
    • Co. Antrim
      • Larne
Tilley et al. (1934)
  • Scotland
    • Aberdeenshire
      • Huntly
BMS Collection
    • City of Edinburgh
F. Rutley: "Elements of Mineralogy" (1900)
[Specimen in the Natural History Museum +1 other reference
Dana 6: 374 +2 other references
    • Fife
      • Kirkcaldy
BMS collection
      • Raith
James Phemister and A. G. MacGregor (1942)
    • Highland
      • Eilean á Chèo
        • Isle of Skye
          • Minginish
            • Carbost
              • Talisker
[Specimen in the Natural History Museum
          • Struan
Wolfgang Hampel
    • North Ayrshire
      • Kilbirnie
Webb (1971)
    • North Lanarkshire
F. Rutley: "Elements of Mineralogy" (1900)
    • South Ayrshire
      • Girvan
Mineralogical Magazine 1964 33 : 814-815
F. Rutley: "Elements of Mineralogy" (1900)
[Specimen in the Natural History Museum
      • Troon
Day (1999)
  • Wales
    • Conwy
      • Penmaenmawr
Sargent et al. (Part II)
    • Gwynedd
      • Pwllheli
National Museum of Wales collection
    • Wrexham
      • Ceiriog Ucha
USA
 
  • Arizona
    • Navajo County
      • Navajo volcanic field
Laughlin et al. (1986) +1 other reference
  • Arkansas
    • Garland County
      • Wilson Springs (Potash Sulfur Springs)
        • Union Carbide Mine
Frank K. Mazdab collection +2 other references
    • Hot Spring County
Erickson +1 other reference
“Smith
Smith (1989)
Erickson +1 other reference
Karl Estes (1998) +1 other reference
Rocks and Minerals (1976)
Howard (1987)
      • Little Rock
Smith (1988) +1 other reference
Horvath collection visual id.
  • California
    • Colusa County
      • Coast Ranges
        • Stonyford
Mr. Gail E. Dunning.
        • Sulphur Creek Mining District (Sulfur Creek Mining District; Wilbur Springs Mining District)
          • Wilbur Springs
Van Nostrand Reinholt Press: 489. +2 other references
    • Humboldt County
      • Coastal Range
 ... +1 other reference
    • Inyo County
      • Bishop Mining District (Tungsten Hills Mining District)
        • Scheelite
Van Nostrand Reinholt Press: 409. +2 other references
    • Lake County
      • East Mayacmas Mining District
        • Middletown
Van Nostrand Reinholt Press: 410. +2 other references
    • Los Angeles County
DeVito +2 other references
    • Mendocino County
      • Cloverdale area
        • Russian River
Van Nostrand Reinholt Press: 410. +2 other references
      • Coastal Range
        • Reeves Place
          • Leech Lake Mountain
Murdoch (1966) +1 other reference
    • San Benito County
      • Idria (New Idria)
Gail E. Dunning (gedunning@juno.com)
      • Idria Peak
Van Nostrand Reinholt Press: 410 +2 other references
Shi et al. (2012)
      • Picacho Peak
Collected by Charles "Chuck" Trantham. ... +1 other reference
Van Nostrand Reinholt Press: 410. +2 other references
Alfors et al. (1984) +2 other references
    • San Francisco County
      • San Francisco
with chemical analyses by W.T. ... +5 other references
    • Santa Barbara County
Dana (1903 & 1914) +1 other reference
Specimen #5900 in the Charles D. ...
    • Sonoma County
      • West Mayacmas Mining District
Van Nostrand Reinholt Press: 410. +2 other references
    • Tehama County
      • Los Molinos
Van Nostrand Reinholt Press: 410. +2 other references
  • Connecticut
    • Fairfield County
      • Newtown
        • Hawleyville
Ronald Januzzi collection
    • Hartford County
      • Bloomfield
        • Tariffville Gorge
Schooner (1961)
Januzzi
      • Farmington
Moritz (n.d.)
      • New Britain
David Busha collection
    • Litchfield County
      • Woodbury
Mike Polletta observations
        • Orenaug Hills
Former Bob Albanese collection
Moritz (n.d.)
    • New Haven County
Former Alfred E. Hammer collection
  • Kansas
AmMin 44:1082
Am Min 44:1082-1086
  • Kentucky
    • Elliott County
Jeffrey J. Agee et al. (1982)
  • Maine
    • York County
      • Cornish
King et al. (1994)
  • Massachusetts
    • Hampden County
      • Hampden
Harvard Mineralogical Museum. Ex. Wayne ...
    • Hampshire County
      • Amherst
Paul Gilmore collection
  • Montana
    • Liberty County
      • Sweet Grass Hills
Stewart (1959)
Bart Cannon specimens and microprobe ...
  • Nevada
    • Humboldt County
Castor et al. (2004)
  • New Jersey
    • Bergen County
      • Edgewater
Mins. of NYC & Environs (1931)
      • Fort Lee
Focus on Fort Lee - A Key and Guide to ... +1 other reference
Manchester (1931)
    • Bergen County & Hudson County
James G. Manchester (1919)
    • Essex County
      • Cedar Grove
        • Cedar Grove
The Minerals of NYC & Its Environs et al. (1931)
      • Livingston
        • Livingston
Rothstein
      • Millburn
        • Millburn
Manchester (1931)
        • Short Hills
Manchester (1931)
      • Montclair
        • Upper Montclair
Rocks & Min.: 18:332-333 (1943) +1 other reference
      • West Orange
        • West Orange
Rock Currier collection
    • Hudson County
      • Bergen Hill
Manchester (1931)
Betts (n.d.)
Darton (1882) +1 other reference
      • Jersey City
        • Bergen Hill
American Museum of Natural History
Manchester (1919) +1 other reference
Amer. Museum of Nat. Hist. +1 other reference
      • North Bergen Township
        • North Bergen
Bradley D. Plotkin collection
      • Secaucus
Minerals of Laurel Hill et al. (published privately)
    • Hunterdon County
      • West Amwell Township
Gems and Minerals of America - Jay ...
    • Passaic County
      • Haledon
      • Little Falls Township
Mason (1960)
G. Levinson +5 other references
A Quest for New Jersey Minerals (1978)
      • Paterson
Specimens collected by and in the ...
Alan "Bundy" Beres
Dana 6:1066.
Peters et al. (1978) +1 other reference
Mineral Collector: 2:138-139 et al. (1895) +2 other references
      • Prospect Park
Rocks & Minerals 80:4 pp234-241 +2 other references
Betts (n.d.)
    • Somerset County
      • Bernards Township
Kent et al. (2000)
      • Bernardsville
Rocks & Minerals (1955)
      • Bridgewater Township
A Quest for New Jersey Minerals (1978)
      • Watchung
Cummings (1987)
Specimen attributed to A.C. Hawkins
    • Sussex County
      • Franklin
Palache (1935) +1 other reference
    • Union County
      • Springfield Township
        • Springfield
Rocks & Min.: 62: 150-159.
Manchester (1931)
  • New Mexico
    • Colfax County
      • Springer
        • Point of Rocks Mesa (Pecks Mesa)
Rocks & Min.:60:229.
    • Taos County
Northrop et al. (1996)
  • New York
    • Lewis County
      • Diana Township
Chamberlain et al. (1999)
American Mineralogist
John H. Betts (2009)
    • Putnam County
      • Town of Southeast
Januzzi +2 other references
    • Rockland County
Manchester (1931)
        • Rockland Lake
Manchester (1931)
Robinson et al. (2007)
      • Orangetown
Manchester (1931)
      • Suffern
Gary Moldovany collection
      • Town of Ramapo
Hershel Friedman collection (2008)
    • Westchester County
New York State Museum mineral collection +1 other reference
Whitlock (1903) +1 other reference
Manchester (1931)
  • Pennsylvania
    • Berks County
      • Birdsboro
        • Gibraltar
    • Lancaster County
      • Brecknock Township
        • Bowmansville
MRH collection
    • Philadelphia County
      • Philadelphia
        • Frankford
Mineralogy of Pennsylvania-1922 +1 other reference
Mineralogy of Pennsylvania-1922 +1 other reference
Mineralogy of Pennsylvania-1922 +1 other reference
  • Virginia
    • Culpeper County
      • Mitchell
Dietrich (1990)
    • Fairfax County
      • Culpeper Basin
        • Centreville
Dietrich (1990)
    • Loudoun County
      • Conklin
Penick (1985)
    • Prince William County
      • Manassas
Dietrich (1990)
  • Washington
    • Skagit County
      • Cypress Island
Cannon (1975)
Cannon (1975)
Cannon (1975)
    • Whatcom County
      • Mount Baker Mining District
        • Sumas Mountain
Cannon (1975)
  • Wisconsin
    • Bayfield County
Cordua
  • Wyoming
    • Park County
Bargar +1 other reference
    • Teton County
      • Lower Geyser Basin
Bargar et al. (1973)
Bargar +1 other reference
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