Daomanite Mineral Data

General Daomanite Information

Chemical Formula:

CuPtAsS2

Composition:

Molecular Weight = 397.68 gm

Copper 15.98 % Cu

Arsenic 18.84 % As

Platinum 49.05 % Pt

Sulfur 16.13 % S

______

100.00 %

Empirical Formula:

CuPtAsS₂

Environment:

Chalcopyrite-bornite veins in hornblende pyroxenite.

IMA Status:

Not Approved IMA 1974

Locality:

Dao and Ma districts, Yanshan, China. Link to MinDat.org Location Data.

Name Origin:

Named for the locality.

Name Pronunciation:

Daomanite + Pronunciation

Daomanite Image

Images:

Daomanite

Comments: Magnification of the micro-aggregate (shown in inset), which consists of white sperrylite, unnamed Cu2(Ni,Co)Pt3S8 and a single daomanite (Dmn) grain, and displays the chain-like morphology. (CanMin, v42:455).
Location: Chromitite layer of the Mount Bolâ€™shaya Varaka deposit, Imandra layered complex, Kola Peninsula, Russia. Scale: See Image.
© Canadian Mineralogist

Daomanite Crystallography

Axial Ratios:

a:b:c =0.3686:1:0.2365

Cell Dimensions:

a = 5.852, b = 15.876, c = 3.756, Z = 4; V = 348.96 Den(Calc)= 7.57

Crystal System:

Orthorhombic - Pyramidal H-M Symbol (mm2) Space Group: Ama2

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

By Intensity(I/I_o): 2.93(1)(200), 3.29(0.6)(140), 1(0.5)(1.93),1.63(0.5)(1.42), 7.95(0.5)(020), 1.73(0.5)(122), 1.28(0.4)(342), 2.72(0.4)(131),

Physical Properties of Daomanite

Cleavage:

{100} Good, {001} Distinct, {010} Fair

Color:

Gray, Silver gray.

Density:

7.03

Diaphaneity:

Opaque

Fracture:

Uneven - Flat surfaces (not cleavage) fractured in an uneven pattern.

Hardness:

3.5-4 - Copper Penny-Fluorite

Luster:

Metallic

Optical Properties of Daomanite

RL Anisotrophism:

Strong.

RL Color:

Light greenish yellow.

RL Pleochroism:

Gold-yellow to grayish green.

Calculated Properties of Daomanite

Electron Density:

Bulk Density (Electron Density)=6.55 gm/cc
note: Specific Gravity of Daomanite =7.57 gm/cc.

Fermion Index:

Fermion Index = 0.16
Boson Index = 0.84

Photoelectric:

PE_Daomanite= 757.40 barns/electron
U=PE_Daomanite x rElectron Density=4,959.58 barns/cc.

Radioactivity:

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

Daomanite Classification

Dana Class:

02.05.07.01 (02)Sulfides - Including Selenides and Tellurides

(02.05)where Am Bn Xp, with (m+n):p=3:2

(02.05.07)Dana Group

02.05.07.01 Daomanite* CuPtAsS2 Ama2 mm2

Strunz Class:

02.LA.15 02 - SULFIDES and SULFOSALTS (sulfides, selenides, tellurides; arsenides, antimonides, bismuthides; sulfarsenites, sulf

02.L - Unclassified Sulfosalts

02.LA -Without essential Pb

02.LA.15 Daomanite* CuPtAsS2 Ama2 mm2

Other Daomanite Information

References:

NAME( Dana8) PHYS. PROP.(AmMin, Vol 87, p 1513) OPTIC PROP.(AntBidBlaNic1)

See Also:

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

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

Daomanite

CuPtAsS2
Dana No: 02.05.07.01 Strunz No: 02.LA.15
Locality:

Notes:

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