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Narsarsukite

This page kindly sponsored by Frank Ruehlicke
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About NarsarsukiteHide

Formula:
Na4(Ti,Fe)2[Si8O20](O,OH,F)2
Colour:
Yellow, yellowish-white, grayish-white, honey-yellow, tan, greenish-yellow
Lustre:
Vitreous, Pearly
Hardness:
7
Specific Gravity:
2.641 - 2.706
Crystal System:
Tetragonal
Name:
Named for the type locality.

Classification of NarsarsukiteHide

Approved, 'Grandfathered' (first described prior to 1959)
9.DJ.05

9 : SILICATES (Germanates)
D : Inosilicates
J : Inosilicates with 4-periodic double and triple chains
70.1.2.1

70 : INOSILICATES Column or Tube Structures
1 : Column or Tube Structures with columnar silicate units
17.1.29

17 : Silicates Containing other Anions
1 : Silicates with fluoride (not containing Al)

Physical Properties of NarsarsukiteHide

Vitreous, Pearly
Transparency:
Transparent, Translucent
Colour:
Yellow, yellowish-white, grayish-white, honey-yellow, tan, greenish-yellow
Streak:
White
Hardness:
Tenacity:
Brittle
Cleavage:
Imperfect/Fair
{110} well developed/fair, {010} distinct
Fracture:
Irregular/Uneven, Sub-Conchoidal
Density:
2.641 - 2.706 g/cm3 (Measured)    
Comment:
Mont St Hilaire, 2.783 from Montana

Optical Data of NarsarsukiteHide

Type:
Uniaxial (+)
RI values:
nω = 1.609 nε = 1.630
Max Birefringence:
δ = 0.021
Image shows birefringence interference colour range (at 30µm thickness)
and does not take into account mineral colouration.
Surface Relief:
Moderate

Chemical Properties of NarsarsukiteHide

Formula:
Na4(Ti,Fe)2[Si8O20](O,OH,F)2
IMA Formula:
Na2(Ti,Fe3+)Si4(O,F)11

Crystallography of NarsarsukiteHide

Crystal System:
Tetragonal
Cell Parameters:
a = 10.72 Å, c = 7.95 Å
Ratio:
a:c = 1 : 0.742
Unit Cell V:
913.60 ų (Calculated from Unit Cell)
Z:
4
Morphology:
Tabular, equant

Crystallographic forms of NarsarsukiteHide

Crystal Atlas:
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Narsarsukite no.1 - Goldschmidt (1913-1926)
Narsarsukite no.2 - Goldschmidt (1913-1926)
Narsarsukite no.3 - Goldschmidt (1913-1926)
3d models and HTML5 code kindly provided by www.smorf.nl.

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IDSpeciesReferenceLinkYearLocalityPressure (GPa)Temp (K)
0000113NarsarsukitePeacor D R, Buerger M J (1962) The determination and refinement of the structure of narsarsukite, Na2TiOSi4O10 American Mineralogist 47 539-55619620293
CIF Raw Data - click here to close

Type Occurrence of NarsarsukiteHide

Synonyms of NarsarsukiteHide

Other Language Names for NarsarsukiteHide

Common AssociatesHide

Associated Minerals Based on Photo Data:
6 photos of Narsarsukite associated with AegirineNaFe3+Si2O6
5 photos of Narsarsukite associated with QuartzSiO2
4 photos of Narsarsukite associated with LeucospheniteBaNa4Ti2B2Si10O30
3 photos of Narsarsukite associated with ManganoneptuniteNa2KLiMn2+2Ti2Si8O24
3 photos of Narsarsukite associated with ElpiditeNa2ZrSi6O15 · 3H2O
3 photos of Narsarsukite associated with PectoliteNaCa2Si3O8(OH)
2 photos of Narsarsukite associated with MicroclineK(AlSi3O8)
1 photo of Narsarsukite associated with Magnesio-arfvedsonite{Na}{Na2}{Mg4Fe3+}(Si8O22)(OH)2

Related Minerals - Nickel-Strunz GroupingHide

9.DJ.10Laplandite-(Ce)Na4CeTiPO4Si7O18 · 5H2OOrth. mmm (2/m 2/m 2/m) : Pmmm
9.DJ.15Caysichite-(Y)Ca2Y2Si4O10(CO3)3 · 4H2OOrth. mm2
9.DJ.20Seidite-(Ce)Na4(Ce,Sr)2[TiSi8O18(OH)2](O,OH,F)4 · 5H2OMon.
9.DJ.25Carlosturanite(Mg,Fe,Ti)21(Si,Al)12O28(OH)34 · H2OMon. m : Bm
9.DJ.30JonesiteBa4(K,Na)2Ti4Al2(Si3O9)2(SiO4)4O2 · 6H2OOrth.

Related Minerals - Dana Grouping (8th Ed.)Hide

70.1.2.2Caysichite-(Y)Ca2Y2Si4O10(CO3)3 · 4H2OOrth. mm2
70.1.2.3Charoite(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

Related Minerals - Hey's Chemical Index of Minerals GroupingHide

17.1.1HectoriteNa0.3(Mg,Li)3(Si4O10)(F,OH)2Mon.
17.1.3AgrelliteNaCa2Si4O10FTric.
17.1.4Fluorapophyllite-(Na)NaCa4(Si8O20)F · 8H2OOrth.
17.1.5Fluorapophyllite-(K)KCa4(Si8O20)(F,OH) · 8H2OTet. 4/mmm (4/m 2/m 2/m) : P4/mnc
17.1.6Hydroxyapophyllite-(K)KCa4(Si8O20)(OH,F) · 8H2OTet.
17.1.7HsianghualiteCa3Li2(Be3Si3O12)F2Iso. 4 3 2 : I41 3 2
17.1.8LeucophaniteNaCaBeSi2O6FOrth. 2 2 2 : P21 21 21
17.1.9NorbergiteMg3(SiO4)(F,OH)2Orth. mmm (2/m 2/m 2/m)
17.1.10ChondroditeMg5(SiO4)2F2Mon. 2/m : P21/b
17.1.11Humite(Mg,Fe2+)7(SiO4)3(F,OH)2Orth. mmm (2/m 2/m 2/m) : Pnma
17.1.12ClinohumiteMg9(SiO4)4F2Mon. 2/m : P21/b
17.1.13CanasiteK3Na3Ca5Si12O30(OH)4Mon.
17.1.14Charoite(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
17.1.15CuspidineCa4(Si2O7)(F,OH)2Mon. 2/m : P21/b
17.1.16BultfonteiniteCa2(HSiO4)F · H2OTric.
17.1.17ZeophylliteCa13Si10O28(OH)2F8 · 6H2OTrig. 3 : R3
17.1.18Rowlandite-(Y)(Y,Ce)4Fe2+(Si2O7)2F2 (?)Tric.
17.1.19YuksporiteK4(Ca,Na)14(Sr,Ba)2(◻,Mn,Fe)(Ti,Nb)4(O,OH)4(Si6O17)2(Si2O7)3(H2O,OH)3Orth.
17.1.20Yftisite-(Y)(Y,Dy,Er)4(Ti,Sn)(SiO4)2O(F,OH)6
17.1.21Mosandrite-(Ce)(Ca3REE)[(H2O)2Ca0.50.5]Ti(Si2O7)2(OH)2(H2O)2Mon. 2/m : P21/b
17.1.22HiortdahliteNa2Ca4(Ca0.5Zr0.5)Zr(Si2O7)2OF3Tric. 1 : P1
17.1.23BurpaliteNa2CaZr(Si2O7)F2Mon.
17.1.24SeidozeriteNa4MnZr2Ti(Si2O7)2O2F2Mon.
17.1.25Thorosteenstrupine(Ca,Th,Mn)3Si4O11F · 6H2O
17.1.26ZircophylliteK2NaFe2+7Zr2(Si4O12)2O2(OH)4FTric.
17.1.27JinshajiangiteBaNaFe2+4Ti2(Si2O7)2O2(OH)2FTric. 1 : P1
17.1.28RosenbuschiteNa6Ca6Zr3Ti(Si2O7)4O2F6Tric. 1 : P1
17.1.30SonoliteMn2+9(SiO4)4(OH)2Mon. 2/m : P21/b

Other InformationHide

Health Risks:
No information on health risks for this material has been entered into the database. You should always treat mineral specimens with care.

References for NarsarsukiteHide

Reference List:
Sort by Year (asc) | by Year (desc) | by Author (A-Z) | by Author (Z-A)
Flink, G. (1899) Part I. On the minerals from Narsarsuk on the Firth of Tunugdliarfik in Southern Greenland. 8-180, In: Flink, G., Bøggild, O.B., Winther, C. (1901) Undersøgelser af Mineraler fra Julianehaab indsamlet af G. Flink 1897, Part II. On some minerals from the Nepheline-Syenite at Julianehaab, Greenland (Epistolite, Britholite, Schizolite and Steenstrupite) Meddelelser om Grønland: 24: 1-213.
Warren, B.E, Amberg, C.R. (1934) X-ray study of narsarsukite, Na2(TiFe)Si4O11. American Mineralogist: 19: 546-548.
Lacroix, A. (1934) Identification d'un minéral dénommé provisoirement "gouréite". Comptes rendus de l'Académie des Sciences, Mem. No 61: 318. (as gouréite)
Graham, W.A.P. (1935) An occurrence of narsarsukite in Montana. American Mineralogist: 20: 598-601.
Stewart, D.B. (1959) Narsarsukite from Sage Creek, Sweetgrass Hills, Montana. American Mineralogist: 44: 265-273.
Jérémine, E., Christophe-Michel-Lévy, M. (1961) Un nouveau gisement de narsarsukite. Bulletin de la Société française de minéralogie et de cristallographie: 84: 191-194.
Peacor, D.R., Buerger, M.J. (1962) The determination and refinement of the crystal structure of narsarsukite, Na2TiOSi4O10. American Mineralogist: 47: 539-556.
Pyatenko, Yu.A., Pudovkina, Z.V. (1961) Crystal structure of narsarsukite. Soviet Physics Crystallography: 5: 540-548.
Rajasekaran, K.C. (1966) Narsarsukite from Mont St. Hilaire, Quebec, Canada. Canadian Mineralogist: 8: 506-514.
Vlasov, K.A. Kuz'menko, M.V., Es'kova, E.M. (1966) The Lovozero alkali massif. Translated from USSR Acad. Sci. Press, Moscow, 1959, Edinburgh (Oliver & Boyd).
International Mineralogical Association (1967) Commission on new minerals and mineral names. Mineralogical Magazine: 36: 131-136.
Upton, B.G.J., MacDonald, R., Hill, P.G., Jefferies, B., Ford, C.E. (1976) Narsarsukite: a new occurrence in peralkaline trachyte, south Greenland. Mineralogical Magazine: 40: 737-746.
Horváth, L., Gault, R.G. (1990) The mineralogy of Mont Saint Hilaire. Mineralogical Record: 21: 284-359.
Wagner, C., Parodi, G.C., Semet, M., Robert, J.L., Berrahma, M., Velde, D. (1991) Crystal chemistry of narsarsukite. European Journal of Mineralogy: 3: 575-585 .
Kartashov, P.M. (1994) Narsarsukite from fenitized rocks of Lovozero massif, Zapiski Vserossijskogo Mineralogicheskogo Obshchestva: 123(4): 58-66.
Shannon, R.D., Shannon, R.C., Medenbach, O., Fischer, R.X. (2002) Refractive index and dispersion of flourides and oxides. Journal of Physical and Chemical Reference Data 31: 931-970.
Kolitsch, U., Tillmanns, E. (2004) The structural relation between the new synthetic silicate K2ScFSi4O10 and narsarsukite, Na2(Ti,Fe3+)(O,F)Si4O10. European Journal of Mineralogy: 16: 143-149. [includes brief data on structure refinement of natural sample]

Internet Links for NarsarsukiteHide

Localities for NarsarsukiteHide

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 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 (eg from pseudomorphs.)

All localities listed without proper references should be considered as questionable.
Antarctica
 
  • Eastern Antarctica
    • Queen Maud Land
Harris, C., Grantham, G.H. (1993): Geology and petrogenesis of the Straumsvola nepheline syenite complex, Dronning Maud Land, Antarctica. Geological Magazine, 130, 4, 513-532.
Brazil
 
  • Minas Gerais
    • Poços de Caldas alkaline complex
      • Poços de Caldas
Azzi, Andrezza de Almeida (2017) Rare Minerals from Poços de Caldas, Minas Gerais, Brazil
  • Paraná
    • Tijucas do Sul
      • Morro Redondo complex
Vilalva, F.C.J., and Vlach, S.R.F. (2010) Major- and trace-element composition of REE-rich turkestanite from peralkaline granites of the Morro Redondo Complex, Graciosa Province, south Brazil. Mineralogical Magazine: 74(4): 645-658.
Canada
 
  • Québec
    • Montérégie
      • La Vallée-du-Richelieu RCM
        • Mont Saint-Hilaire
RAJASEKARAN, K.C. (1966) Narsarsukite from Mont St. Hilaire, Quebec, Canada. Canadian Mineralogist, 8, 506-514.; CHAO, G.Y. (1967) Leucophanite, elpidite, and narsarsukite from the Desourdy quarry, Mont St. Hilaire, Quebec. Canadian Mineralogist, 9, 286-287.; FALLS, R.B. (1983) Elpidite and narsarsukite from Mont Saint-Hilaire, Quebec. B.Sc. Thesis, University of Toronto, Canada.; GRICE, J.D. (1989) Mont Saint-Hilaire, Quebec: Canada's Most Diverse Mineral Locality. In: Famous mineral localities of Canada. Published by Fitzhenry & Whiteside Limited & the National Museum of Natural Sciences, 190 pages: 100-108; 166-175.
http://www.koeln.netsurf.de/~w.steffens/can.htm; Canadian Mineralogist Vol. 34, pp.349-371 (1996); A. Kerr and H. Rafuse (2012) Rare-earth element (REE) geochemistry of the Strange Lake deposits: Implications for resource estimation and metallogenic models. Newfoundland and Labrador Department of Natural Resources Current Research 2012 pp39-60; BIRKETT, T.C., MILLER, R.R., ROBERTS, A.C., & MARIANO, A.N. (1992) Zirconium bearing minerals from the Strange Lake intrusive complex, Quebec Labrador. Canadian Mineralogist, 30, 191-205.
Germany
 
  • Rhineland-Palatinate
    • Mayen-Koblenz District
      • Vordereifel
        • Ettringen
[Hentschel, G., Neue Mineralfunde aus dem Laacher Vulkangebiet, Mainzer geowiss. Mitt. 9, 121–125, 1980] [Lapis, 15 (5), 9-36]
Greenland (TL)
 
  • Kujalleq
    • Igaliku
      • Narsaarsuk Plateau
Flink, G. (1901) On the minerals from Narsarsuk on the Firth of Tunugdliarfik in Southern Greenland. 30. Narsarsukite. Meddelelser om Grønland 24, 154-160 ; Bøgghild, O.B. (1953): The Mineralogy of Greenland. Meddelelser om Grønland, Bd. 149. Nr. 3., C.A. Reitzels Forlag, Copenhagen. 445 p (p.318-319)
Petersen, O.V. (2001): List of all minerals identified in the Ilímaussaq alkaline complex, South Greenland. Geology of Greenland Survey Bulletin. 190, 25-33
      • Kangerluarsuk Fjord
Petersen O. V., Johnsen O., Micheelsen, H. I. (1999): Turkestanite from the Ilimaussaq alkaline complex, south Greenland. Neues Jahrbuch für Mineralogie Monatshefte 9, pp. 424-432
    • Illutalik Island
Upton, B.J.G. , Hill, P.G., Jefferies, B.,Ford and Macdonald, R. (1976): Narsarsukite: A New Occurrence in Peralkaline Trachyte, South Greenland. Mineralogical Magazine. 40 : 737-746.
  • Sermersooq
http://www.koeln.netsurf.de/~w.steffens/green.htm
Kazakhstan
 
  • East Kazakhstan
    • Tarbagatai Range
      • Akzhaylyautas Mts (Akzhailyautas Mts; Akjaylautas Mts; Akzhalautas Mts)
Pavel M. Kartashov data
Mongolia
 
  • Khovd Province
    • Myangad District
P.M. Kartashov data; Kovalenko, V. I., Yarmolyuk, V. V., Sal nikova, E. B., Kartashov, P. M., Kovach, V. P., Kozakov, I. K., ... & Yakovleva, S. Z. (2004). The Khaldzan-Buregtei Massif of peralkaline rare-metal igneous rocks: structure, geochronology, and geodynamic setting in the Caledonides of Western Mongolia. Petrology c/c of Petrologiia, 12(5), 412-436.
Morocco
 
  • Souss-Massa Region
    • Taroudant Province
      • Taliouine Cercle
        • Askaouen Caïdat
Woolley, A. R. (2001). Alkaline Rocks and Carbonatites of the World: Africa. Geological Society of London. Berrahma, M., & Delaloye, M. (1989). Données géochronologiques nouvelles sur le massif volcanique du Siroua (Anti-Atlas, Maroc). Journal of African Earth Sciences (and the Middle East), 9(3-4), 651-656. doi.org/10.1016/0899-5362(89)90049-3 BERRAHMA, M. H., & Hernandez, J. (1985). Nouvelles donnees sur le volcanisme trachytique hyperalcalin du volcan du Siroua (Anti-Atlas, Maroc). Comptes rendus de l'Académie des sciences. Série 2, Mécanique, Physique, Chimie, Sciences de l'univers, Sciences de la Terre, 300(17), 863-868. Choubert, G., Charlot, R., Faure-Muret, A., Hottinger, L., Marçais, J., Tisserant, D. & Vidal, P. 1968. Note préliminaire sur le volcanisme messinien (pontien) au Maroc. Comptes Rendus Hebdomadaires des Séances de l'Académie des Sciences, Paris, 266D, 197-199. Wagner, C., Parodi, G. C., Semet, M., Robert, J. L., Berrahma, M., & Velde, D. (1991). Crystal chemistry of narsarsukite. European Journal of Mineralogy, 3(3), 575-586.
Namibia
 
  • Khomas Region
    • Windhoek Rural
      • Aris
Robin Tibbit collection (SXRD analysis by Uwe Kolitsch + EDS analysis by Franz Neuhold); Kolitsch, U., Blaß, G., Jahn, S., Cámara, F., von Bezing, L., Wartha, R. R., Tremmel, G., Sturla, M., Cerea, P., Skebo, M. and Ciriotti, M. E. (2016): Aris - mineralogy of the famous alkaline phonolite. AMI - Associazione Micromineralogica Italiana, Cremona, Italy, 95 pp.
New Zealand
 
  • Bay of Plenty Region
www.koeln.netsurf.de/~w.steffens/other.htm
NZJGG, 2003, 46: 581-590. NZJGG, 1991, 34: 337-340. NZJGG, 1981, 24: 449-467
NZJGG, 2003, 46: 581-590. NZJGG, 1991, 34: 337-340. NZJGG, 1981, 24: 449-467
NZJGG, 2003, 46: 581-590. NZJGG, 1991, 34: 337-340. NZJGG, 1981, 24: 449-467
Niger
 
  • Zinder
    • Gouré
Handbook of Mineralogy
    • Mounio Complex
Bessoles, B., & Trompette, R. (1980). Géologie de l'Afrique: la chaine panafricaine, zone mobile de l'Afrique centrale. Mémoire BRGM, (92). Black, R. (1963). Note sur les complexes annulaires de Tchoni-Zarniski et de Gouré (Niger). Bulletin du Bureau de recherches géologiques et minières, (1), 31-45. Bowden, P., Van Breemen, O., Hutchinson, J., & Turner, D. C. (1976). Palaeozoic and Mesozoic age trends for some ring complexes in Niger and Nigeria. Nature, 259(5541), 297-299. doi.org/10.1038/259297a0
Nigeria
 
  • Bauchi
    • Shira
Bennett, J. N., Turner, D. C., Ike, E. C., & Bowden, P. (1984). The geology of some northern Nigerian anorogenic ring complexes. Overseas Geology and Mineral Resources, 61, 1-65. Rahaman, M. A., Van Breemen, O., Bowden, P., & Bennett, J. N. (1984). Age migrations of anorogenic ring complexes in Northern Nigeria. The Journal of Geology, 92(2), 173-184. doi.org/10.1086/628847
Norway
 
  • Viken
    • Lunner
Raade, G. & Haug, J. (1982): Gjerdingen. Fundstelle seltener Mineralien in Norwegen. LAPIS 7, 9-15
Portugal
 
  • Azores
    • São Miguel
Samples collected by Luigi Chiappino and analysed by Dr. Anthony Kampf, Natural History Museum of Los Angeles County, USA; Lavarde, S., Chiappino, L., Alves, P., Astolfi, M., (2019) Les Minéraux du massif volcanique du Fogo, Ile de São Miguel, Açores, Portugal. Le Règne Mineral, 145, 30-50
Russia
 
  • Aldan Shield
    • Chara and Tokko Rivers Confluence
      • Murunskii Massif
Konev, A.A., Vorobyev, E.I., and Lazebnik, K.A. (1996) The Mineralogy of the Murun Massif. Russian Academy of Science Press, Siberian Branch, Novosbirsk, Russia (in Rus.); Pekov, I. (1998) Minerals First discovered on the territory of the former Soviet Union 369p. Ocean Pictures, Moscow
        • Sirenevyi Kamen' Deposit
Konev, A.A., Vorob'yev, E.I., and Lazebnik, K.A. (1996) The Mineralogy of the Murun Massif. Russian Academy of Science Press, Siberian Branch, Novosbirsk, Russia (in Rus.)
  • Murmansk Oblast
    • Khibiny Massif
Pekov, I.V. & Podlesnyi, A.S. (2004): Kukisvumchorr Deposit: Mineralogy of Alkaline Pegmatites and Hydrotermalites. Mineralogical Almanac, vol. 7, 140 pages + xxiv photo's pages
    • Lovozersky District
Sorokhtina N.V., Voloshin A.V., Pakhomovskii Ya.A., Selivanova E.A. (2004) The first find of daqingshanite-(Ce) on Kola peninsula, - Trudy 1 Fersmanovskoi Nauchnoi Sessii Kolskogo Otdeleniya VMO, Apatity,pt.1, pp. 34-36 (in Russ.)
      • Karnasurt Mountain
Pekov, I. (1998) Minerals First discovered on the territory of the former Soviet Union 369p. Ocean Pictures, Moscow; Zubkova, N. V., Pekov, I. V., Pushcharovsky, D. Y., & Chukanov, N. V. (2009). The crystal structure and refined formula of mountainite, KNa2Ca2 [Si8O19 (OH)]⊙ 6 H2O. Zeitschrift für Kristallographie, 224(8), 389-396.
Ivanyuk, Gregory & Я.А, Пахомовский & В.Н, Яковенчук & Ю.П, Меньшиков & А.Н, Богданова & Ю.А, Михайлова. (2006). Редкометальные минералы микроклино-кварцевых жил в вулканогенно-осадочных породах г. Киткнюн (Ловозерский массив). 66-81.
[World of Stones 95:5-6, p64]; The Canadian Mineralogist Vol. 43, pp. 735-746 (2005)
    • Turii Cape
www.koeln.netsurf.de/~w.steffens/tury.htm; Pekov, I. (1998) Minerals First discovered on the territory of the former Soviet Union 369p. Ocean Pictures, Moscow
USA
 
  • Arkansas
    • Hot Spring Co.
      • Magnet Cove
Rocks & Min.:63:109.
Horváth Collection - confirmed visually
    • Pulaski Co.
      • Little Rock
Rocks and Minerals, (1988) 63:104-125; Rocks and Minerals, (1989) 64:314-322
Horvath collection visual id.
Graham, W.A.P. (1935) An occurrence of narsarsukite in Montana. American Mineralogist: 20: 598-601. Stewart, D.B. (1959) Narsarsukite from Sage Creek, Sweetgrass Hills, Montana. American Mineralogist: 44: 265-273.
    • Liberty Co.
Gobla, M.J. (2012) Montana mineral locality index. Rocks & Minerals, 87, #3, 208-240; Chris Tucker and John Betts specimens.
      • Sweet Grass Hills
D. B. Stewart (1959),THE AMERICAN MINERALOGIST, VOL.44:265-273
D. B. Stewart (1959),THE AMERICAN MINERALOGIST, VOL.44:265-273
  • New Mexico
    • Otero Co.
      • Cornudas Mountains
Dr. W. Stoll (private communication 2001 & 2004)
 
Mineral and/or Locality  
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