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Sclarite

A valid IMA mineral species
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About SclariteHide

05832150015361008795235.jpg
Charles B. Sclar
Formula:
Zn7(CO3)2(OH)10
May contain minor Mg and Mn replacing Zn.
Colour:
Colourless, light gray in aggregates
Lustre:
Resinous, Waxy, Greasy
Hardness:
3 - 4
Specific Gravity:
3.51
Crystal System:
Monoclinic
Name:
Named in 1989 by Joel Denison Grice and Pete J. Dunn in honor of Dr. Charles Bertram Sclar [March 16, 1925 Newark, New Jersey, USA - January 13, 2001 Bethlehem, Northampton County, Pennsylvania, USA], Professor of Geology, Lehigh University, Bethlehem, Pennsylvania, U.S.A. Dr. Sclar was a specialist in high pressure metamorphic petrology, was a chief scientist for researching the lunar petrology specimens collected by the Apollo missions, and was a researcher of the Franklin - Ogdensburg ore deposits.
Isostructural with:
A very rare Zn carbonate.

At the type locality, sclarite occurs in small (<1mm) colorless crystals in cloudy grayish white crystal clusters. At low magnification, the sclarite appears smoothly spherical, but the crystals in the clusters distinctly project out of the spherical grouping at varying lengths. Spherical clusters of gray white to pale pink calcite/rhodochrosite are often present as are creamy white spherical clusters of Mineral F (Dunn, 1986). Sclarite has been observed only in the distinctive and essential association with fibrous lilac to purple-brown gageite crystals.


Unique IdentifiersHide

Mindat ID:
3593
Long-form identifier:
mindat:1:1:3593:0
GUID
(UUID V4):
813aa2dc-c6f9-489d-b3cd-1b7f84128b50

IMA Classification of SclariteHide

Classification of SclariteHide

5.BA.30

5 : CARBONATES (NITRATES)
B : Carbonates with additional anions, without H2O
A : With Cu, Co, Ni, Zn, Mg, Mn
16a.5.3.2

16a : ANHYDROUS CARBONATES CONTAINING HYDROXYL OR HALOGEN
5 : Miscellaneous
11.6.9

11 : Carbonates
6 : Carbonates of Zn and Cd

Mineral SymbolsHide

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

SymbolSourceReference
SlIMA–CNMNCWarr, L.N. (2021). IMA–CNMNC approved mineral symbols. Mineralogical Magazine, 85(3), 291-320. doi:10.1180/mgm.2021.43

Physical Properties of SclariteHide

Resinous, Waxy, Greasy
Transparency:
Transparent, Translucent
Colour:
Colourless, light gray in aggregates
Streak:
White
Hardness:
3 - 4 on Mohs scale
Tenacity:
Brittle
Cleavage:
None Observed
Fracture:
Irregular/Uneven
Density:
3.51 g/cm3 (Measured)    3.55 g/cm3 (Calculated)

Optical Data of SclariteHide

Type:
Biaxial (+)
RI values:
nα = 1.648 nβ = 1.664 nγ = 1.702
2V:
Measured: 63° to 67°, Calculated: 68°
Birefringence:
0.054
Max Birefringence:
δ = 0.054
Image shows birefringence interference colour range (at 30µm thickness)
and does not take into account mineral colouration.
Surface Relief:
Moderate
Dispersion:
r > v strong
Optical Extinction:
Y=b, X^c = 49°
Pleochroism:
Non-pleochroic

Chemistry of SclariteHide

Mindat Formula:
Zn7(CO3)2(OH)10

May contain minor Mg and Mn replacing Zn.

Crystallography of SclariteHide

Crystal System:
Monoclinic
Class (H-M):
2/m - Prismatic
Space Group:
B2/b
Cell Parameters:
a = 16.110 Å, b = 5.432 Å, c = 15.041 Å
β = 95.49°
Ratio:
a:b:c = 2.966 : 1 : 2.769
Unit Cell V:
1,310.19 ų (Calculated from Unit Cell)
Z:
4
Morphology:
Flattened on {001}, elongated to {010}; Form {100} is generally small.
Comment:
A2/a

Crystal StructureHide

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IDSpeciesReferenceLinkYearLocalityPressure (GPa)Temp (K)
0001284SclariteGrice J D, Dunn P J (1989) Sclarite, a new mineral from Franklin, New Jersey, with essential octahedrally and tetrahedrally coordinated zinc: Description and structure refinement American Mineralogist 74 1355-135919890293
CIF Raw Data - click here to close

X-Ray Powder DiffractionHide

Powder Diffraction Data:
d-spacingIntensity
7.51 Å(100)
5.23 Å(20)
3.75 Å(40)
3.63 Å(50)
3.53 Å(40)
3.398 Å(20)
3.277 Å(<10)
3.209 Å(<10)
2.934 Å(20)
2.807 Å(<10)
2.711 Å(<10)
2.671 Å(<10)
2.621 Å(50)
2.552 Å(<10)
2.500 Å(40)
2.440 Å(10)
2.334 Å(20)
2.281 Å(30)
2.216 Å(<10)
2.203 Å(<10)
2.150 Å(20)
2.119 Å(20)
2.082 Å(<10)
1.998 Å(10)
1.888 Å(<10)
1.882 Å(<10)
1.839 Å(<10)
1.817 Å(10)
1.790 Å(<10)
1.764 Å(<10)
1.744 Å(<10)
1.712 Å(<10)
1.697 Å(<10)
1.688 Å(<10)
1.659 Å(<10)
1.607 Å(<10)
1.597 Å(<10)
1.566 Å(<10)
1.549 Å(<10)
1.522 Å(<10)
1.494 Å(<10)
1.481 Å(<10)
1.468 Å(<10)
1.447 Å(<10)
1.442 Å(<10)
1.421 Å(<10)
1.384 Å(<10)
1.378 Å(<10)
1.359 Å(<10)
1.328 Å(<10)
1.312 Å(<10)
1.275 Å(<10)
1.269 Å(<10)
1.258 Å(<10)
Comments:
Grice, Joel D. and Dunn, Pete J. (1989) Sclarite, a new mineral from Franklin, New Jersey, with essential octahedrally and tetrahedrally coordinated zinc: Description and structure refinement, American Mineralogist, v. 74, p. 1355-1359.

Geological EnvironmentHide

Type Occurrence of SclariteHide

General Appearance of Type Material:
Tiny slender bladed crystals or spherules with terminations creating a rough surface.
Place of Conservation of Type Material:
Canadian Museum of Nature, Ottawa, Ontario, Canada, number 53777 (holotype).
National Museum of Natural History, Washington, D.C., USA, number B13671 (holotype).
Geological Setting of Type Material:
Etched veinlets in willemite - franklinite ore without calcite.
Associated Minerals at Type Locality:
Reference:
Grice, J.D. and Dunn, P.J. (1989) Sclarite, a new mineral from Franklin, New Jersey, with essential octahedrally and tetrahedrally coordinated zinc: Description and structure refinement. American Mineralogist: 74: 1355-1359.

Synonyms of SclariteHide

Other Language Names for SclariteHide

German:Sclarit
Spanish:Sclarita

Common AssociatesHide

Associated Minerals Based on Photo Data:
5 photos of Sclarite associated with GageiteMn21(Si4O12)2O3(OH)20
2 photos of Sclarite associated with Chlorophoenicite(Mn,Mg)3Zn2(AsO4)(OH,O)6
2 photos of Sclarite associated with RhodochrositeMnCO3
2 photos of Sclarite associated with UM1986-10-CO:ClHMgMnZn (also called Mineral F, Dunn, 1995)Mg5(Zn,Mn)3(CO3)2(OH,Cl)12 · H2O
1 photo of Sclarite associated with LeucophoeniciteMn2+7(SiO4)3(OH)2
1 photo of Sclarite associated with CalciteCaCO3

Related Minerals - Strunz-mindat GroupingHide

5.BA.PerchiazziiteCo2(CO3)(OH)2Mon. 2/m : P21/b
5.BA.05AzuriteCu3(CO3)2(OH)2Mon. 2/m : P21/b
5.BA.10Georgeite[Cu(OH)2-x(H2O)x][CO3]x/2Amor.
5.BA.10Glaukosphaerite(Cu,Ni)2(CO3)(OH)2Mon. 2/m : P21/b
5.BA.10KolweziteCuCo(CO3)(OH)2Tric.
5.BA.10MalachiteCu2(CO3)(OH)2Mon. 2/m : P21/b
5.BA.10Mcguinnessite(Mg,Cu)2(CO3)(OH)2Mon. 2/m
5.BA.10NullaginiteNi2(CO3)(OH)2Mon. 2/m : P21/b
5.BA.10PokrovskiteMg2(CO3)(OH)2Mon. 2/m : P21/b
5.BA.10Rosasite(Cu,Zn)2(CO3)(OH)2Mon. 2/m : P21/b
5.BA.10Zincrosasite(Zn,Cu)2(CO3)(OH)2Mon.
5.BA.10ChukanoviteFe2+2(CO3)(OH)2Mon. 2/m : P21/b
5.BA.10ParádsasváriteZn2(CO3)(OH)2Mon. 2/m : P21/b
5.BA.15Aurichalcite(Zn,Cu)5(CO3)2(OH)6Mon. 2/m : P21/m
5.BA.15HydrozinciteZn5(CO3)2(OH)6Mon. 2/m : B2/m
5.BA.20HoldawayiteMn6(CO3)2(OH)7(Cl,OH)Mon. 2/m : B2/m
5.BA.25DeferniteCa6(CO3)1.58(Si2O7)0.21(OH)7[Cl0.50(OH)0.08(H2O)0.42]Orth. mmm (2/m 2/m 2/m) : Pnma
5.BA.25UM1977-03-COSiO:CaClHCa10-11(CO3)7(SiO4)Cl1-2(OH)1-2Mon.
5.BA.30Loseyite(Mn2+,Zn,Mg)4Zn3(CO3)2(OH)10Mon. 2/m

Fluorescence of SclariteHide

Not fluorescent in UV

Other InformationHide

IR Spectrum:
Not fluorescent
Health Risks:
No information on health risks for this material has been entered into the database. You should always treat mineral specimens with care.

Internet Links for SclariteHide

References for SclariteHide

Localities for SclariteHide

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.
Greece
 
  • Attica
    • East Attica
      • Lavreotiki
        • Lavrion mining district
          • Agios Konstantinos (Kamariza)
            • Kamariza Mines (Kamareza Mines)
Schnorrer (2004)
Poland
 
  • Lesser Poland Voivodeship
    • Olkusz County
      • Gmina Bolesław
Coppola et al. (2009)
USA (TL)
 
  • New Jersey
    • Sussex County
      • Franklin
Dunn (1986) +1 other reference
 
Mineral and/or Locality  
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