Santanaite Mineral Data

Santanaite Mineral Data +

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General Santanaite Information

Chemical Formula:

Pb++9Pb++++2CrO16

Composition:

Molecular Weight = 2,587.19 gm

Chromium 2.01 % Cr 3.86 % CrO₃

Lead 88.10 % Pb 77.64 % PbO / 18.49 % PbO₂

Oxygen 9.89 % O

______ ______

100.00 % 100.00 % = TOTAL OXIDE

Empirical Formula:

Pb₉Pb₂CrO₁₆

IMA Status:

Approved IMA 1972

Locality:

Link to MinDat.org Location Data.

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Santanaite Crystallography

Axial Ratios:

a:c = 1:4.41196

Cell Dimensions:

a = 9.03, c = 39.84, Z = 6; V = 2,813.36 Den(Calc)= 9.16

Crystal System:

Hexagonal - TrapezohedralH-M Symbol (6 2 2) Space Group: P 6₃22

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

By Intensity(I/I_o): 3.539(1), 2.606(0.8), 2.08(0.5),

Physical Properties of Santanaite

Cleavage:

[0001] Perfect, [1210] Perfect

Color:

Straw yellow.

Density:

9.155

Hardness:

4 - Fluorite

Optical Properties of Santanaite

Optical Data:

Uniaxial (-), e=2.12, w=2.32, bire=0.2000.

Calculated Properties of Santanaite

Electron Density:

r_electron=7.46 gm/cc
note: r_Santanaite=9.16 gm/cc.

Fermion Index

Fermion Index = 0.19664
Boson Index = 0.80336

Photoelectric:

PE_Santanaite=1,660.31 barns/electron
U=PE_Santanaite x r_electron=12391.59 barns/cc.

Radioactivity:

GRapi = 0 (Gamma Ray American Petroleum Institute Units)

Santanaite is Not Radioactive

Santanaite Classification

Dana Class:

35.4.1.1 (35)Anhydrous Chromates

(35.4)with miscellaneous formulae

(35.4.1)Dana Group

35.4.1.1 Santanaite Pb9Pb2CrO16 P 6₃22 6 2 2

Strunz Class:

VI/F.02-50 VI - Sulfates,Chromates,Molybdates and Tungstates

VI/F - Chromates [CrO4]2-

VI/F.02 - Wattersite - Satanaite series

VI/F.02-03 Wattersite Hg4HgCrO6 C 2/c 2/m

VI/F.02-05 Edoylerite Hg3CrO4S2 P 2₁/a 2/m

VI/F.02-07 Deanesmithite Hg2Hg3CrO5S2 P1 1

VI/F.02-10 Vauquelinite Pb2Cu(CrO4)(PO4)(OH) P 2₁/n 2/m

VI/F.02-20 Fornacite Pb2Cu(CrO4)(AsO4)(OH) P 2₁/c 2/m

VI/F.02-30 Molybdofornacite Pb2Cu[(As,P)O4][(Mo,Cr)O4](OH) P 2₁/c 2/m

VI/F.02-40 Phoenicochroite Pb2(CrO4)O C 2/m 2/m

VI/F.02-50 Santanaite Pb9Pb2CrO16 P 6₃22 6 2 2

Other Santanaite Information

References:

PHYS. PROP.(Enc. of Minerals,2nd ed.,1990) OPTIC PROP.(Enc. of Minerals,2nd ed.,1990)

See Also:

Links to other databases for Santanaite :
1 -Am. Min. Crystal Structure Database 2 -Athena 3 - EUROmin Project 4 -Google Images 5 -Google Scholar 6 -Handbook of Mineralogy (UofA) 7 -MinDAT 8 -MinMax(Deutsch) 9 -MinMax(English) 10 -Mineralienatlas (Deutsch) 11 -QUT Mineral Atlas 12 -École des Mines de Paris

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

Santanaite

Pb++9Pb++++2CrO16
Dana No: 35.4.1.1 Strunz No: VI/F.02-50
Locality:

Notes: