Cadmoselite Mineral Data

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General Cadmoselite Information

Chemical Formula:

CdSe

Composition:

Molecular Weight = 191.37 gm

Cadmium 58.74 % Cd

Selenium 41.26 % Se

______

100.00 %

Empirical Formula:

CdSe

Environment:

In sedimentary strata, under reducing secondary conditions of medium to high alkalinity.

IMA Status:

Valid Species (Pre-IMA) 1957

Locality:

From the Givetian sedimentary formations, locality not otherwise defined, Tuva ASSR, USSR. Link to MinDat.org Location Data.

Name Origin:

For the presence of cadmium and selenium.

Name Pronunciation:

Cadmoselite + Pronunciation

Synonym:

ICSD 60630

PDF 8-459

Cadmoselite Image

Images:

Cadmoselite

Comments: Black cadmoselite grains in quartz.
Location: Republic of Tuva, Siberia, Russia. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Cadmoselite Crystallography

Axial Ratios:

a:c = 1:1.6317

Cell Dimensions:

a = 4.271, c = 6.969, Z = 2; V = 110.09 Den(Calc)= 5.77

Crystal System:

Hexagonal - Dihexagonal PyramidalH-M Symbol (6mm) Space Group: P 6₃mc

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

By Intensity(I/I_o): 3.72(1), 2.15(0.85), 3.29(0.75),

Crystal Structure:

Mouse
drag1 - LMB Manipulate Structure
drag2 - RMB Resize/Rotate
Keyboard
S - Stereo Pair on/off
H - Help Screen
I - Data Info
A - Atoms On/Off
P - Polyhedra On/Off
B - Bonds On/Off
Help on Above

Wyckoff R W G , Crystal Structures , 1 (1963) p.85-237, Second edition. Interscience Publishers, New York, New York, Note: wurtzite structure

Physical Properties of Cadmoselite

Cleavage:

{???} Perfect

Color:

Black.

Density:

5.663

Diaphaneity:

Translucent to Opaque

Hardness:

4 - Fluorite

Luster:

Adamantine - Resinous

Streak:

black

Optical Properties of Cadmoselite

RL Anisotrophism:

Weak.

RL Color:

Light gray in air, slightly brown in oil with brownish internal reflections.

Calculated Properties of Cadmoselite

Electron Density:

Bulk Density (Electron Density)=4.94 gm/cc
note: Specific Gravity of Cadmoselite =5.77 gm/cc.

Fermion Index:

Fermion Index = 0.17
Boson Index = 0.83

Photoelectric:

PE_Cadmoselite= 198.93 barns/electron
U=PE_Cadmoselite x rElectron Density= 983.68 barns/cc.

Radioactivity:

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

Cadmoselite Classification

Dana Class:

02.08.07.03 (02)Sulfides - Including Selenides and Tellurides

(02.08)where Am Bn Xp, with (m+n):p=1:1

(02.08.07)Wurtzite Group (Hexagonal: P63mc)

02.08.07.01 Wurtzite (Zn,Fe)S P 6₃mc 6mm

02.08.07.02 Greenockite CdS P 6₃mc 6mm

02.08.07.03 Cadmoselite CdSe P 6₃mc 6mm

02.08.07.04 Rambergite! MnS P 6₃mc 6mm

Strunz Class:

02.CB.45 02 - SULFIDES and SULFOSALTS (sulfides, selenides, tellurides; arsenides, antimonides, bismuthides; sulfarsenites, sulf

02.C - Metal Sulfides, M:S = 1:1 (and similar)

02.CB -With Zn, Fe, Cu, Ag, Au, etc

02.CB.45 Cadmoselite CdSe P 6₃mc 6mm

02.CB.45 Greenockite CdS P 6₃mc 6mm

02.CB.45 Rambergite! MnS P 6₃mc 6mm

02.CB.45 Wurtzite (Zn,Fe)S P 6₃mc 6mm

Other Cadmoselite Information

References:

NAME( AntBidBlaNic1) PHYS. PROP.(Enc. of Minerals,2nd ed.,1990) OPTIC PROP.(AntBidBlaNic1)

See Also:

Links to other databases for Cadmoselite :
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
15 - WWW-MINCRYST

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Ask about Cadmoselite here :
Ask-A-Mineralogist from the Mineralogical Society of America
Mindat.org's Discussion Groups
Original Rockhounds Discussion Group
Rockhounds Discussion Group on Yahoo Groups
Mineral Discussion Forum from Fabre Minerals - also available in Español

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

Cadmoselite

CdSe
Dana No: 02.08.07.03 Strunz No: 02.CB.45
Locality:

Notes: