Malanite Mineral Data

Malanite Mineral Data +

General Malanite Information

Chemical Formula:

Cu(Pt,Ir)2S4

Composition:

Molecular Weight = 580.54 gm

Copper 10.95 % Cu

Iridium 16.56 % Ir

Platinum 50.40 % Pt

Sulfur 22.09 % S

______

100.00 %

Empirical Formula:

CuPt_1.5Ir_0.5S₄

Environment:

In peridotite-type platinum ores with Cu-Ni sulfides.

IMA Status:

Approved IMA 1995

Locality:

Malan valley, Zunhua, Hebei Province, China. Link to MinDat.org Location Data.

Name Origin:

Named for the locality.

Synonym:

ICSD 56265

IMA1995-003

PDF 38-406

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Malanite Crystallography

Cell Dimensions:

a = 9.91, Z = 8; V = 973.24 Den(Calc)= 7.92

Crystal System:

Isometric - HexoctahedralH-M Symbol (4/m 3 2/m) Space Group: F d3m

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

By Intensity(I/I_o): 1.75(1), 1.9(0.7), 2.98(0.6),

Physical Properties of Malanite

Color:

White, Steel gray.

Density:

7.4

Diaphaniety:

Opaque

Habit:

Granular - Generally occurs as anhedral to subhedral crystals in matrix.

Hardness:

5 - Apatite

Luster:

Metallic

Optical Properties of Malanite

RL Color:

Bright white with a faint brown tint.

Calculated Properties of Malanite

Electron Density:

r_electron=6.78 gm/cc
note: r_Malanite=7.92 gm/cc.

Fermion Index

Fermion Index = 0.17202
Boson Index = 0.82798

Photoelectric:

PE_Malanite=1,009.01 barns/electron
U=PE_Malanite x r_electron=6,841.39 barns/cc.

Radioactivity:

GRapi = 0 (Gamma Ray American Petroleum Institute Units)

Malanite is Not Radioactive

Malanite Classification

Dana Class:

2.10.1.17 (2)Sulfides - Including Selenides and Tellurides

(2.10)where Am Bn Xp, with (m+n):p=3:4

(2.10.1)Linnaeite Group (Isometric: Fd3m)

2.10.1.1 Linnaeite CoCo2S4 F d3m 4/m 3 2/m

2.10.1.2 Carrollite Cu(Co,Ni)2S4 F d3m 4/m 3 2/m

2.10.1.3 Fletcherite Cu(Ni,Co)2S4 F d3m 4/m 3 2/m

2.10.1.4 Tyrrellite (Cu,Co,Ni)3Se4 F d3m 4/m 3 2/m

2.10.1.5 Bornhardtite CoCo2Se4 F d3m 4/m 3 2/m

2.10.1.6 Siegenite (Ni,Co)3S4 F d3m 4/m 3 2/m

2.10.1.7 Polydymite NiNi2S4 F d3m 4/m 3 2/m

2.10.1.8 Violarite FeNi2S4 F d3m 4/m 3 2/m

2.10.1.9 Trustedtite Ni3Se4 F d3m 4/m 3 2/m

2.10.1.10 Greigite FeFe2S4 F d3m 4/m 3 2/m

2.10.1.11 Daubreelite FeCr2S4 F d3m 4/m 3 2/m

2.10.1.12 Indite FeIn2S4 F d3m 4/m 3 2/m

2.10.1.13 Kalininite ZnCr2S4 F d3m 4/m 3 2/m

2.10.1.14 Florensovite Cu(Cr1.5Sb0.5)S4 F d3m 4/m 3 2/m

2.10.1.15 Cuproiridsite CuIr2S4 F d3m 4/m 3 2/m

2.10.1.16 Cuprorhodsite CuRh2S4 F d3m 4/m 3 2/m

2.10.1.17 Malanite Cu(Pt,Ir)2S4 F d3m 4/m 3 2/m

2.10.1.18 Ferrorhodsite (Fe,Cu)(Rh,Ir,Pt)2S4 F d3m 4/m 3 2/m

2.10.1.19 Cadmoindite! CdIn2S4 F d3m 4/m 3 2/m

Strunz Class:

II/D.02-40 II - Sulfides and sulphosalts

II/D - Sulfides with metal: sulfur, selenium and tellurium < 1:1, Tellurides with Copper, Silver, Gold

II/D.02 - Dayingite - Xingzhongite series

II/D.02-10 Dayingite? CuCoPtS4 F m3m 4/m 3 2/m

II/D.02-20 Cuprorhodsite CuRh2S4 F d3m 4/m 3 2/m

II/D.02-30 Cuproiridsite CuIr2S4 F d3m 4/m 3 2/m

II/D.02-40 Malanite Cu(Pt,Ir)2S4 F d3m 4/m 3 2/m

II/D.02-45 Ferrorhodsite (Fe,Cu)(Rh,Ir,Pt)2S4 F d3m 4/m 3 2/m

II/D.02-50 Xingzhongite (Pb,Cu,Fe)(Ir,Pt,Rh)2S4 F d3m 4/m 3 2/m

Other Malanite Information

References:

NAME( AntBidBlaNic1) PHYS. PROP.(Am.Min.,Vol.82,p820,1997) OPTIC PROP.(AntBidBlaNic1)

See Also:

Links to other databases for Malanite :
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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Malanite

Cu(Pt,Ir)2S4
Dana No: 2.10.1.17 Strunz No: II/D.02-40
Locality:

Notes: