Safflorite Mineral Data

General Safflorite Information

Chemical Formula:

(Co,Fe)As2

Composition:

Molecular Weight = 208.00 gm

Iron 6.71 % Fe

Cobalt 21.25 % Co

Arsenic 72.04 % As

______

100.00 %

Empirical Formula:

Co_0.75Fe²⁺_0.25As₂

Environment:

Hydrothermal veins of moderate temperature and presssure.

IMA Status:

Valid Species (Pre-IMA) 1835

Locality:

Schneeberg District, Erzgebirge, Saxony, GermanySchneeberg District, Erzgebirge, Saxony, Germany. Link to MinDat.org Location Data.

Name Origin:

From the German Safflor - "dyer's saffron."

Name Pronunciation:

Safflorite + Pronunciation

Safflorite Image

Images:

Safflorite

Comments: Safflorite covering three faces of the specimen, with silver.
Location: Castle Mine (Castle-Tretheway Mine), Gowganda, Haultain Township, Timiskaming District, Ontario, Canada. Scale: 7x 3x 3.5 cm.
© Ibrahim Jameel / Khyber Mineral Company

Safflorite Crystallography

Axial Ratios:

a:b:c =0.8688:1:0.5036

Cell Dimensions:

a = 5.173, b = 5.954, c = 2.999, Z = 2; V = 92.37 Den(Calc)= 7.48

Crystal System:

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

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

By Intensity(I/I_o): 2.379(1), 2.572(0.8), 2.597(0.55),

Forms:

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Forms: ( 0 1 0) ( 1 1 0) ( 1 2 0) ( 1 0 1)

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Crystal Structure:

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Yang H , Downs R T , Eichler C , Acta Crystallographica, Section E , 64 (2008) p.i62-i62, Safflorite, (Co,Ni,Fe)As2, isomorphous with marcasite, Locality: Timiskaming County, Ontario, Canada, RRUFF ID: R070611

Physical Properties of Safflorite

Cleavage:

{010} Imperfect

Color:

Gray, Dark gray, Tin white.

Density:

6.9 - 7.3, Average = 7.1

Diaphaneity:

Opaque

Fracture:

Brittle - Generally displayed by glasses and most non-metallic minerals.

Habit:

Massive - Granular - Common texture observed in granite and other igneous rock.

Habit:

Radial - Crystals radiate from a center without producing stellar forms (e.g. stibnite)

Hardness:

4-5 - Fluorite-Apatite

Luminescence:

Non-fluorescent.

Luster:

Metallic

Magnetism:

Nonmagnetic

Streak:

grayish black

Optical Properties of Safflorite

RL Anisotrophism:

Strong.

RL Color:

White.

RL Pleochroism:

Weak.

Reflectivity

**Standardized Intensity (100%) Reflection Spectra of Safflorite in Air**
λ	R₁	R₂	∑ R₁(λ)	∑ R₂(λ)
400 nm	55.80	52.60
420 nm	55.80	53.00
440 nm	55.80	53.40
460 nm	55.60	53.80
480 nm	55.20	54.10
500 nm	54.70	54.30
520 nm	54.20	54.40
540 nm	53.50	54.50
560 nm	52.80	54.50
580 nm	52.20	54.50
600 nm	51.80	54.40
620 nm	51.30	54.30
640 nm	51.00	54.20
660 nm	50.70	54.10
680 nm	50.50	53.90
700 nm	50.30	53.80

**Calculated Relative Intensity Colors of Safflorite in Air**
Relative Intensity	0%	20%	40%	60%	80%	100%	120%	140%	160%	170%
R₁
R₂

Calculated Properties of Safflorite

Electron Density:

Bulk Density (Electron Density)=6.67 gm/cc
note: Specific Gravity of Safflorite =7.48 gm/cc.

Fermion Index:

Fermion Index = 0.0014229913
Boson Index = 0.9985770087

Photoelectric:

PE_Safflorite= 62.03 barns/electron
U=PE_Safflorite x rElectron Density= 413.81 barns/cc.

Radioactivity:

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

Safflorite Classification

Dana Class:

02.12.02.11 (02)Sulfides - Including Selenides and Tellurides

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

(02.12.02)Marcasite Group (Orthorhombic: Pnnm)

02.12.02.01 Marcasite FeS2 Pnnm 2/m 2/m 2/m

02.12.02.02 Ferroselite FeSe2 Pnnm 2/m 2/m 2/m

02.12.02.03 Frohbergite FeTe2 Pnnm 2/m 2/m 2/m

02.12.02.04 Hastite? CoSe2 Pnnm 2/m 2/m 2/m

02.12.02.05 Mattagamite CoTe2 Pnnm 2/m 2/m 2/m

02.12.02.06 Kullerudite NiSe2 Pnnm 2/m 2/m 2/m

02.12.02.07 Omeiite (Os,Ru)As2 Pnnm 2/m 2/m 2/m

02.12.02.08 Anduoite (Ru,Os)As2 Pnnm 2/m 2/m 2/m

02.12.02.09 Lollingite FeAs2 Pnnm 2/m 2/m 2/m

02.12.02.10 Seinajokite (Fe,Ni)(Sb,As)2 Pnnm 2/m 2/m 2/m

02.12.02.11 Safflorite (Co,Fe)As2 Pnnm 2/m 2/m 2/m

02.12.02.12 Rammelsbergite NiAs2 Pnnm 2/m 2/m 2/m

02.12.02.13 Nisbite NiSb2 Pnnm 2/m 2/m 2/m

Strunz Class:

02.EB.15a 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.15a Clinosafflorite (Co,Fe,Ni)As2 P 2₁/n 2/m

02.EB.15a Anduoite (Ru,Os)As2 Pnnm 2/m 2/m 2/m

02.EB.15a Lollingite FeAs2 Pnnm 2/m 2/m 2/m

02.EB.15a Omeiite (Os,Ru)As2 Pnnm 2/m 2/m 2/m

02.EB.15a Nisbite NiSb2 Pnnm 2/m 2/m 2/m

02.EB.15a Rammelsbergite NiAs2 Pnnm 2/m 2/m 2/m

02.EB.15a Safflorite (Co,Fe)As2 Pnnm 2/m 2/m 2/m

Other Safflorite Information

References:

NAME( Duda&Rejl90) PHYS. PROP.(Enc. of Minerals,2nd ed.,1990) OPTIC PROP.(AntBidBlaNic1)

See Also:

Links to other databases for Safflorite :
1 - Am. Min. Crystal Structure Database
2 - Amethyst Galleries' Mineral Gallery
3 - Athena
4 - EUROmin Project
5 - Ecole des Mines de Paris
6 - Franklin Minerals(Dunn)
7 - GeoScienceWorld
8 - Google Images
9 - Google Scholar
10 - Handbook of Mineralogy (MinSocAm)
11 - HyperPhysics
12 - MinDAT
13 - Mineral and Gemstone Kingdom
14 - Mineralienatlas (Deutsch)
15 - Online Mineral Museum
16 - QUT Mineral Atlas
17 - Ruff.Info
18 - WWW-MINCRYST

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

Safflorite

(Co,Fe)As2
Dana No: 02.12.02.11 Strunz No: 02.EB.15a
Locality:

Notes: