Sclarite Mineral Data

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Sclarite Mineral Data

General Sclarite Information

Chemical Formula:

(Zn,Mg,Mn++)4Zn3(CO3)2(OH)10

Composition:

Molecular Weight = 694.34 gm

Magnesium 4.20 % Mg 6.97 % MgO

Manganese 3.16 % Mn 4.09 % MnO

Zinc 50.85 % Zn 63.30 % ZnO

Hydrogen 1.45 % H 12.97 % H₂O

Carbon 3.46 % C 12.68 % CO₂

Oxygen 36.87 % O

______ ______

100.00 % 100.00 % = TOTAL OXIDE

Empirical Formula:

Zn_2.4Mg_1.2Mn²⁺_0.4Zn₃(CO₃)₂(OH)₁₀

Environment:

On a museum specimen, in a veinlet possibly of hydrothermal origin, from a metamorphosed stratiform zinc orebody.

IMA Status:

Approved IMA 1989

Locality:

Franklin, Sussex Co., New Jersey, USA. Link to MinDat.org Location Data.

Name Origin:

Named for Charles Bertram Sclar (1925-2001), Geology Department, Lehigh University, Bethlehem, Pennsylvania, USA

Name Pronunciation:

Sclarite

Synonym:

ICSD 203157

PDF 46-1270

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Sclarite Crystallography

Axial Ratios:

a:b:c =2.9657:1:2.7689

Cell Dimensions:

a = 16.11, b = 5.432, c = 15.041, Z = 4; beta = 95.49° V = 1,310.19 Den(Calc)= 3.52

Crystal System:

Monoclinic - PrismaticH-M Symbol (2/m) Space Group: A2/a

$Help on X Ray Diffraction:$ X Ray Diffraction:

By Intensity(I/I_o): 7.5(1), 2.621(0.5), 3.63(0.5),

Crystal Structure:

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Grice J D , Dunn P J , American Mineralogist , 74 (1989) p.1355-1359, Sclarite, a new mineral from Franklin, New Jersey, with essential octahedrally, and tetrahedrally coordinated zinc: Description and structure refinement

Physical Properties of Sclarite

Cleavage:

None

Color:

Colorless.

Density:

3.51

Diaphaneity:

Transparent

Hardness:

3-4 - Calcite-Fluorite

Luster:

Vitreous (Glassy)

Streak:

white

Optical Properties of Sclarite

Gladstone-Dale:

CI meas= 0.008 (Superior) - where the CI = (1-KPDmeas/KC)
CI calc= 0.011 (Superior) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.1907,KPDmeas= 0.1913,KC= 0.1928
Ncalc = 1.68

Optical Data:

Biaxial (+), a=1.648, b=1.664, g=1.702, bire=0.0540, 2V(Calc)=68, 2V(Meas)=63.4-67.

Calculated Properties of Sclarite

Electron Density:

Bulk Density (Electron Density)=3.40 gm/cc
note: Specific Gravity of Sclarite =3.51 gm/cc.

Fermion Index:

Fermion Index = 0.02
Boson Index = 0.98

Photoelectric:

PE_Sclarite= 26.08 barns/electron
U=PE_Sclarite x rElectron Density= 88.69 barns/cc.

Radioactivity:

GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Sclarite is Not Radioactive

Sclarite Classification

Dana Class:

16a.05.03.02 (16a)Carbonates - Hydroxyl or Halogen

(16a.05)with miscellaneous formulae

(16a.05.03)Dana Group

16a.05.03.01 Loseyite (Mn,Zn)7(CO3)2(OH)10 A2/a 2/m

16a.05.03.02 Sclarite (Zn,Mg,Mn)4Zn3(CO3)2(OH)10 A2/a 2/m

Strunz Class:

05.BA.30 05 - CARBONATES (NITRATES)

05.B - Carbonates with additional anions, without H2O

05.BA -With Cu, Co, Ni, Zn, Mg, Mn

05.BA.30 Loseyite (Mn,Zn)7(CO3)2(OH)10 A2/a 2/m

05.BA.30 Sclarite (Zn,Mg,Mn)4Zn3(CO3)2(OH)10 A2/a 2/m

Other Sclarite Information

References:

NAME( AntBidBlaNic3) PHYS. PROP.(Am.Min.,Vol.74,p1355-1359,1989) OPTIC PROP.(Am.Min.,Vol.74,p1355-1359,1989)

See Also:

Links to other databases for Sclarite :
1 - Am. Min. Crystal Structure Database
2 - Athena
3 - EUROmin Project
4 - Ecole des Mines de Paris
5 - Franklin Minerals(Dunn)
6 - GeoScienceWorld
7 - Google Images
8 - Google Scholar
9 - Handbook of Mineralogy (MinSocAm)
10 - Handbook of Mineralogy (UofA)
11 - MinDAT
12 - Mineralienatlas (Deutsch)
13 - Online Mineral Museum
14 - QUT Mineral Atlas
15 - Ruff.Info
16 - WWW-MINCRYST

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Print or Cut-and-Paste your Sclarite Specimen Label here :

Sclarite

(Zn,Mg,Mn++)4Zn3(CO3)2(OH)10
Dana No: 16a.05.03.02 Strunz No: 05.BA.30
Locality:

Notes: