Sclarite Mineral Data

Sclarite Mineral Data +

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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

IMA Status:

Approved IMA 1989

Locality:

Link to MinDat.org Location Data.

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

Diaphaniety:

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

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:

r_electron=3.40 gm/cc
note: r_Sclarite=3.51 gm/cc.

Fermion Index

Fermion Index = 0.02561
Boson Index = 0.97439

Photoelectric:

PE_Sclarite= 26.08 barns/electron
U=PE_Sclarite x r_electron= 88.69 barns/cc.

Radioactivity:

GRapi = 0 (Gamma Ray American Petroleum Institute Units)

Sclarite is Not Radioactive

Sclarite Classification

Dana Class:

16a.5.3.2 (16a)Carbonates - Hydroxyl or Halogen

(16a.5)with miscellaneous formulae

(16a.5.3)Dana Group

16a.5.3.1 Loseyite (Mn,Zn)7(CO3)2(OH)10 A2/a 2/m

16a.5.3.2 Sclarite (Zn,Mg,Mn)4Zn3(CO3)2(OH)10 A2/a 2/m

Strunz Class:

V/C.01-130 V - Nitrates, Carbonates and Borates

V/C - Waterfree carbonates with unfamiliar anions

V/C.01 - Azurite - Rosasite group and related compounds

V/C.01-10 Azurite Cu3(CO3)2(OH)2 P 2₁/a 2/m

V/C.01-20 Malachite Cu2(CO3)(OH)2 P 2₁/a 2/m

V/C.01-25 Georgeite Cu5(CO3)3(OH)4·6(H2O) None

V/C.01-30 Pokrovskite Mg2(CO3)(OH)2·0.5(H2O) P 2₁/a 2/m

V/C.01-40 Mcguinnessite (Mg,Cu)2(CO3)(OH)2 P 2/a or P 2₁/a 2/m

V/C.01-50 Kolwezite (Cu,Co)2(CO3)(OH)2 P1 or P1 Tri

V/C.01-60 Glaukosphaerite (Cu,Ni)2(CO3)(OH)2 P 2₁/a 2/m

V/C.01-70 Nullaginite Ni2(CO3)(OH)2 P 2₁/m,P 2₁ Mono

V/C.01-80 Rosasite (Cu,Zn)2(CO3)(OH)2 P 2₁/a 2/m

V/C.01-90 Zincrosasite (Zn,Cu)2(CO3)(OH)2 P 2₁/a 2/m

V/C.01-100 Hydrozincite Zn5(CO3)2(OH)6 C 2/m 2/m

V/C.01-105 Brianyoungite Zn3(CO3,SO4)(OH)4 C 2/m 2/m

V/C.01-110 Aurichalcite (Zn,Cu)5(CO3)2(OH)6 P 2₁/m 2/m

V/C.01-120 Loseyite (Mn,Zn)7(CO3)2(OH)10 A2/a 2/m

V/C.01-130 Sclarite (Zn,Mg,Mn)4Zn3(CO3)2(OH)10 A2/a 2/m

Other Sclarite Information

References:

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

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Sclarite

(Zn,Mg,Mn++)4Zn3(CO3)2(OH)10
Dana No: 16a.5.3.2 Strunz No: V/C.01-130
Locality:

Notes: