Mgriite Mineral Data (original) (raw)

General Mgriite Information

Help on Chemical Formula: Chemical Formula:

(Cu,Fe)3AsSe3

Help on Composition: Composition:

Molecular Weight = 496.67 gm

Iron 8.43 % Fe

Copper 28.79 % Cu

Arsenic 15.08 % As

Selenium 47.69 % Se

______

100.00 %

Help on Empirical Formula: Empirical Formula:

Cu2.25Fe2+0.75AsSe3

Help on Environment: Environment:

In hydrotherma veins.

Help on IMA Status: IMA Status:

Approved IMA 1982

Help on Locality: Locality:

Erzgibirge, Saxony, Germany. Link to MinDat.org Location Data.

Help on Name Origin: Name Origin:

Named for the Moscow Geological Exploration Institute (MGEI).

Help on Name Pronunciation: Name Pronunciation:

Mgriite Say MGRIITE

Help on Synonym: Synonym:

ICSD 42582

PDF 40-1251

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Mgriite Crystallography

Help on Cell Dimensions: Cell Dimensions:

a = 5.53, Z = 1; V = 169.11 Den(Calc)= 4.88

Help on Crystal System: 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/Io): 1.952(1), 3.18(1), 1.671(0.5),

Click Here for Large Mgriite Structure Window Crystal Structure:

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| | Bayliss P , The Canadian Mineralogist , 28 (1990) p.751-755, Revised unit cell dimensions, space group,, and chemical formua of some metallic minerals, Locality: synthetic | | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------ |

Physical Properties of Mgriite

Help on Cleavage: Cleavage:

None

Help on Color: Color:

Brownish gray, Light gray.

Help on Diaphaneity: Diaphaneity:

Opaque

Help on Fracture: Fracture:

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

Help on Habit: Habit:

Massive - Uniformly indistinguishable crystals forming large masses.

Help on Hardness: Hardness:

4.5-5 - Near Apatite

Help on Luster: Luster:

Metallic

Optical Properties of Mgriite

Help on RL Color: RL Color:

Gray with brownish tint.

Help on Reflectivity Reflectivity

Standardized Intensity (100%) Reflection Spectra of Mgriite in Air

λ R ∑ R(λ)
420 nm 27.10
460 nm 26.70
500 nm 26.40
540 nm 26.90
580 nm 27.00
620 nm 26.80
660 nm 26.40
700 nm 26.00

Calculated Relative Intensity Colors of Mgriite in Air

RelativeIntensity 0% 40% 80% 100% 120% 160% 200% 240% 280% 320% 330%
R

Calculated Properties of Mgriite

Help on Electron Density: Electron Density:

Bulk Density (Electron Density)=4.32 gm/cc
note: Specific Gravity of Mgriite =4.88 gm/cc.

Help on Fermion Index: Fermion Index:

Fermion Index = 0.03
Boson Index = 0.97

Help on Photoelectric: Photoelectric:

PEMgriite = 65.24 barns/electron
U=PEMgriite x rElectron Density= 281.73 barns/cc.

Help on Radioactivity: Radioactivity:

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

Mgriite Classification

Help on Dana Class: Dana Class:

03.04.07.02 (03)Sulfides - Sulfosalts

(03.04)where z/y > 3 - (A+)i (A++)j [By Cz], A=metals, B=semi-metals, C=non-metals

(03.04.07)Dana Group

03.04.07.02 Mgriite (Cu,Fe)3AsSe3 F d3m 4/m 3 2/m

Help on Strunz Class: Strunz Class:

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

02.L - Unclassified Sulfosalts

02.LA -Without essential Pb

02.LA.45 Mgriite (Cu,Fe)3AsSe3 F d3m 4/m 3 2/m

Other Mgriite Information

Help on References: References:

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

Help on See Also: See Also:

Links to other databases for Mgriite :
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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Ask about Mgriite here :
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Print or Cut-and-Paste your Mgriite Specimen Label here :

Mgriite

(Cu,Fe)3AsSe3
Dana No: 03.04.07.02 Strunz No: 02.LA.45
Locality:

Notes: