Paracostibite Mineral Data

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General Paracostibite Information

Chemical Formula:

CoSbS

Composition:

Molecular Weight = 212.75 gm

Cobalt 27.70 % Co

Antimony 57.23 % Sb

Sulfur 15.07 % S

______

100.00 %

Empirical Formula:

CoSbS

Environment:

Massive base-metal sulfide deposit in a carbonatized chlorite-anthophyllite schist that is most likely an altered mafic rock.

IMA Status:

Approved IMA 1970

Locality:

Drill core from Trout Bay, Red Lake, Mulcahy Township, Kenora district, Ontario, Canada Link to MinDat.org Location Data.

Name Origin:

Named for the chemical composition and probable structural relationship to pararammelsbergite.

Name Pronunciation:

Paracostibite + Pronunciation

Synonym:

ICSD 40045

IMA1969-023

PDF 23-106

Paracostibite Image

Images:

Paracostibite

Comments: Photomicrograph showing four groups of paracostibite grains (white) associated with sphalerite (grey), and chalcopyrite (liglit grey). Dark areas are pits. (CanMin v 10:232).
Location: Drill-core from claims held by Cochenour Willans Gold Mines Ltd. in Mulcahy Township, District of Kenora, Red Lake Mining Division, Ontario, Canada. Scale: See Image.
© Canadian Mineralogist

Paracostibite Crystallography

Axial Ratios:

a:b:c =0.9684:1:1.9548

Cell Dimensions:

a = 5.764, b = 5.952, c = 11.635, Z = 8; V = 399.17 Den(Calc)= 7.08

Crystal System:

Orthorhombic - DipyramidalH-M Symbol (2/m 2/m 2/m) Space Group: P bca

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

By Intensity(I/I_o): 2.555(1), 2.035(0.8), 5.813(0.8),

Crystal Structure:

Mouse
drag1 - LMB Manipulate Structure
drag2 - RMB Resize/Rotate
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S - Stereo Pair on/off
H - Help Screen
I - Data Info
A - Atoms On/Off
P - Polyhedra On/Off
B - Bonds On/Off
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Rowland J F , Gabe E J , Hall S R , The Canadian Mineralogist , 13 (1975) p.188-196, The crystal structures of costibite (CoSbS) and paracostibite(CoSbS)

Physical Properties of Paracostibite

Color:

Gray white, White.

Density:

6.9

Diaphaneity:

Opaque

Habit:

Irregular Grains - Occurs as splotchy, anhedral crystals forming inclusions in other minerals or rocks.

Hardness:

7 - Quartz

Luster:

Metallic

Optical Properties of Paracostibite

RL Anisotrophism:

Weak, faint pink to pale buff.

RL Color:

White with a faint grayish tinge.

RL Pleochroism:

Weak.

Reflectivity

**Standardized Intensity (100%) Reflection Spectra of Paracostibite in Air**
λ	R₁	R₂	∑ R₁(λ)	∑ R₂(λ)
400 nm	47.80	47.90
420 nm	48.00	48.50
440 nm	48.20	48.90
460 nm	48.20	48.90
480 nm	48.20	49.20
500 nm	48.40	49.60
520 nm	48.70	49.60
540 nm	48.90	49.40
560 nm	49.00	49.30
580 nm	49.20	49.20
600 nm	49.50	49.30
620 nm	49.70	49.60
640 nm	49.90	49.90
660 nm	50.20	50.30
680 nm	50.30	50.60
700 nm	50.50	50.90

**Calculated Relative Intensity Colors of Paracostibite in Air**
Relative Intensity	0%	20%	40%	60%	80%	100%	120%	140%	160%	180%	190%
R₁
R₂

Calculated Properties of Paracostibite

Electron Density:

Bulk Density (Electron Density)=6.26 gm/cc
note: Specific Gravity of Paracostibite =7.08 gm/cc.

Fermion Index:

Fermion Index = 0.0011304155
Boson Index = 0.9988695845

Photoelectric:

PE_{Paracostibite}= 201.52 barns/electron
U=PE_{Paracostibite} x rElectron Density=1,260.77 barns/cc.

Radioactivity:

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

Paracostibite Classification

Dana Class:

02.12.07.02 (02)Sulfides - Including Selenides and Tellurides

(02.12)where Am Bn Xp, with (m+n):p=1:2

(02.12.07)Costibite Group (Orthorhombic Cobalt Arsenides or Antimonides)

02.12.07.01 Costibite CoSbS P mn2₁ mm2

02.12.07.02 Paracostibite CoSbS P bca 2/m 2/m 2/m

02.12.07.03 Oenite! CoSbAs Unk Ortho

Strunz Class:

02.EB.10e 02 - SULFIDES and SULFOSALTS (sulfides, selenides, tellurides; arsenides, antimonides, bismuthides; sulfarsenites, sulf

02.E - Metal Sulfides, M:S £ 1:2

02.EB -M:S = 1:2, with Fe, Co, Ni, PGE, etc.

02.EB.10e Pararammelsbergite NiAs2 Pbma 2/m 2/m 2/m

02.EB.10e Paracostibite CoSbS P bca 2/m 2/m 2/m

Other Paracostibite Information

References:

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

See Also:

Links to other databases for Paracostibite :
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 Paracostibite here :
Ask-A-Mineralogist from the Mineralogical Society of America
Mindat.org's Discussion Groups
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Rockhounds Discussion Group on Yahoo Groups
Mineral Discussion Forum from Fabre Minerals - also available in Español

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

Paracostibite

CoSbS
Dana No: 02.12.07.02 Strunz No: 02.EB.10e
Locality:

Notes: