Schirmerite Mineral Data (original) (raw)

General Schirmerite Information

Help on Chemical Formula: Chemical Formula:

Ag3Pb3Bi9S18 to Ag3Pb6Bi7S18

Help on Composition: Composition:

Molecular Weight = 2,985.26 gm

Silver 10.84 % Ag

Bismuth 49.00 % Bi

Lead 20.82 % Pb

Sulfur 19.33 % S

______

100.00 %

Help on Empirical Formula: Empirical Formula:

Ag3Pb3Bi7S18

Help on Environment: Environment:

Disseminated through quartz.

Help on IMA Status: IMA Status:

Valid Species (Pre-IMA) 1874

Help on Locality: Locality:

Treasury lode, Geneva district, Park Co., Colorado, USA. Link to MinDat.org Location Data.

Help on Name Origin: Name Origin:

Named for J. H. L. Schirmer, superintendent of the U. S. Mint, Denver, Colorado, USA.

Help on Name Pronunciation: Name Pronunciation:

Schirmerite + Pronunciation Say SCHIRMERITE

Help on Synonym: Synonym:

Beegerite - mixture of schirmerite and matildite

Schirmerite Image

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Schirmerite Crystallography

Help on Axial Ratios: Axial Ratios:

a:b:c =0.3029:1:0.0905

Help on Cell Dimensions: Cell Dimensions:

a = 13.45, b = 44.4, c = 4.02, Z = 4; V = 2,400.66 Den(Calc)= 8.26

Help on Crystal System: Crystal System:

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

Help on X Ray Diffraction: X Ray Diffraction:

By Intensity(I/Io): 2.82(1), 3.27(0.7), 1.961(0.6),

Physical Properties of Schirmerite

Help on Cleavage: Cleavage:

None

Help on Color: Color:

Lead gray, Gray, Iron black.

Help on Density: Density:

6.74

Help on Diaphaneity: Diaphaneity:

Opaque

Help on Fracture: Fracture:

Brittle - Uneven - Very brittle fracture producing uneven fragments.

Help on Habit: Habit:

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

Help on Hardness: Hardness:

2 - Gypsum

Help on Luminescence: Luminescence:

Non-fluorescent.

Help on Luster: Luster:

Metallic

Help on Magnetism: Magnetism:

Nonmagnetic

Optical Properties of Schirmerite

Help on RL Anisotrophism: RL Anisotrophism:

Weak in air, distinct to strong in oil, in gray to black.

Help on RL Color: RL Color:

White.

Help on RL Pleochroism: RL Pleochroism:

Weak in air, weak to distinct in oil.

Help on Reflectivity Reflectivity

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

λ R1 R 2 ∑ R1(λ) ∑ R2(λ)
400 nm 42.60 46.60
420 nm 43.00 47.30
440 nm 43.40 48.00
460 nm 43.60 48.20
480 nm 43.50 48.20
500 nm 43.20 48.00
520 nm 42.90 47.70
540 nm 42.40 47.20
560 nm 42.00 46.70
580 nm 41.70 46.20
600 nm 41.40 46.00
620 nm 41.20 45.70
640 nm 41.10 45.60
660 nm 41.00 45.50
680 nm 40.90 45.30
700 nm 40.90 45.10

Calculated Relative Intensity Colors of Schirmerite in Air

RelativeIntensity 0% 30% 60% 90% 100% 120% 150% 180% 210% 220%
R1
R2

Calculated Properties of Schirmerite

Help on Electron Density: Electron Density:

Bulk Density (Electron Density)=6.95 gm/cc
note: Specific Gravity of Schirmerite =8.26 gm/cc.

Help on Fermion Index: Fermion Index:

Fermion Index = 0.04
Boson Index = 0.96

Help on Photoelectric: Photoelectric:

PESchirmerite =1,347.60 barns/electron
U=PESchirmerite x rElectron Density=9,366.52 barns/cc.

Help on Radioactivity: Radioactivity:

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

Schirmerite Classification

Help on Dana Class: Dana Class:

03.05.05.01 (03)Sulfides - Sulfosalts

(03.05)where 2.5 < z/y < 3 - (A+)i (A++)j [By Cz], A=metals, B=semi-metals, C=non-metals

(03.05.05)Dana Group

03.05.05.01 Schirmerite Ag3Pb3Bi9S18toAg3Pb6Bi7S18 Bbmm 2/m 2/m 2/m

Help on Strunz Class: Strunz Class:

02.JB.40d 02 - SULFIDES and SULFOSALTS (sulfides, selenides, tellurides; arsenides, antimonides, bismuthides; sulfarsenites, sulf

02.J - Sulfosalts of PbS Archetype

02.JB -Galena derivatives, with Pb

02.JB.40d Schirmerite Ag3Pb3Bi9S18toAg3Pb6Bi7S18 Bbmm 2/m 2/m 2/m

Other Schirmerite Information

Help on References: References:

NAME( Ford32) PHYS. PROP.(Dana8) OPTIC PROP.(AntBidBlaNic1)

Help on See Also: See Also:

Links to other databases for Schirmerite :
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 Schirmerite Specimen Label here :

Schirmerite

Ag3Pb3Bi9S18 to Ag3Pb6Bi7S18
Dana No: 03.05.05.01 Strunz No: 02.JB.40d
Locality:

Notes: