Jalpaite Mineral Data (original) (raw)

General Jalpaite Information

Help on Chemical Formula: Chemical Formula:

Ag3CuS2

Help on Composition: Composition:

Molecular Weight = 451.28 gm

Copper 14.08 % Cu

Silver 71.71 % Ag

Sulfur 14.21 % S

______

100.00 %

Help on Empirical Formula: Empirical Formula:

Ag3CuS2

Help on Environment: Environment:

Formed under low-temperature hydrothermal conditions.

Help on IMA Status: IMA Status:

Valid Species (Pre-IMA) 1858

Help on Locality: Locality:

In the USA, in Colorado, at the Payrock mine in Silver Plume, Clear Creek Co. Link to MinDat.org Location Data.

Help on Name Origin: Name Origin:

For the Mexican locality at Jalpa.

Help on Name Pronunciation: Name Pronunciation:

Jalpaite Say JALPAITE

Help on Synonym: Synonym:

ICSD 67526

PDF 12-207

Jalpaite Image

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Jalpaite Crystallography

Help on Axial Ratios: Axial Ratios:

a:c = 1:1.36024

Help on Cell Dimensions: Cell Dimensions:

a = 8.633, c = 11.743, Z = 8; V = 875.19 Den(Calc)= 6.85

Help on Crystal System: Crystal System:

Tetragonal - Ditetragonal DipyramidalH-M Symbol (4/m 2/m 2/m) Space Group: I 41/amd

Help on X Ray Diffraction: X Ray Diffraction:

By Intensity(I/Io): 2.345(1), 2.74(0.9), 2.794(0.9),

Click Here for Large Jalpaite Structure Window Crystal Structure:

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drag1 - LMB Manipulate Structure
drag2 - RMB Resize/Rotate
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| | Baker C L , Lincoln F J , Johnson W S , Australian Journal of Chemistry , 45 (1992) p.1441-1449, Crystal structure determination of Ag3CuS2 from powder X-ray diffraction data, Locality: synthetic | | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------ |

Physical Properties of Jalpaite

Help on Color: Color:

Gray, Dark gray.

Help on Density: Density:

6.82

Help on Diaphaneity: Diaphaneity:

Opaque

Help on Fracture: Fracture:

Sectile - Curved shavings or scrapings produced by a knife blade, (e.g. graphite).

Help on Hardness: Hardness:

2-2.5 - Gypsum-Finger Nail

Help on Luster: Luster:

Metallic

Help on Streak: Streak:

black

Optical Properties of Jalpaite

Help on RL Anisotrophism: RL Anisotrophism:

Distinct in greenish blues and light green.

Help on RL Pleochroism: RL Pleochroism:

Distinct in oil, brownish gray to pure gray.

Help on Reflectivity Reflectivity

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

λ R1 R 2 ∑ R1(λ) ∑ R2(λ)
400 nm 34.40 35.60
420 nm 34.10 36.00
440 nm 33.80 36.40
460 nm 33.20 36.40
480 nm 32.40 35.60
500 nm 31.80 34.60
520 nm 31.20 33.90
540 nm 30.70 33.30
560 nm 30.30 32.80
580 nm 29.80 32.30
600 nm 29.50 31.90
620 nm 29.30 31.50
640 nm 29.00 31.10
660 nm 28.80 30.70
680 nm 28.60 30.20
700 nm 28.20 29.80

Calculated Relative Intensity Colors of Jalpaite in Air

RelativeIntensity 0% 40% 80% 100% 120% 160% 200% 240% 280% 300%
R1
R2

Calculated Properties of Jalpaite

Help on Electron Density: Electron Density:

Bulk Density (Electron Density)=6.13 gm/cc
note: Specific Gravity of Jalpaite =6.85 gm/cc.

Help on Fermion Index: Fermion Index:

Fermion Index = 0.0010658288
Boson Index = 0.9989341712

Help on Photoelectric: Photoelectric:

PEJalpaite = 190.00 barns/electron
U=PEJalpaite x rElectron Density=1,165.13 barns/cc.

Help on Radioactivity: Radioactivity:

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

Jalpaite Classification

Help on Dana Class: Dana Class:

02.04.04.01 (02)Sulfides - Including Selenides and Tellurides

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

(02.04.04)Dana Group

02.04.04.01 Jalpaite Ag3CuS2 I 41/amd 4/m 2/m 2/m

02.04.04.02 Selenojalpaite! Ag3CuSe2 I 41/amd 4/m 2/m 2/m

Help on Strunz Class: Strunz Class:

02.BA.25c 02 - SULFIDES and SULFOSALTS (sulfides, selenides, tellurides; arsenides, antimonides, bismuthides; sulfarsenites, sulf

02.B - Metal Sulfides, M:S > 1:1 (mainly 2:1)

02.BA -With Cu, Ag, Au

02.BA.25c Jalpaite Ag3CuS2 I 41/amd 4/m 2/m 2/m

02.BA.25c Selenojalpaite! Ag3CuSe2 I 41/amd 4/m 2/m 2/m

Other Jalpaite Information

Help on References: References:

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

Help on See Also: See Also:

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

Jalpaite

Ag3CuS2
Dana No: 02.04.04.01 Strunz No: 02.BA.25c
Locality:

Notes: