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Hatchite Mineral Data
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General Hatchite Information
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 Chemical Formula: |
(Pb,Tl)2AgAs2S5 |
| Composition: |
Molecular Weight = 831.03 gm |
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Thallium 12.30 % Tl |
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Silver 12.98 % Ag |
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Arsenic 18.03 % As |
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Lead 37.40 % Pb |
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Sulfur 19.29 % S |
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______ |
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100.00 % |
| Empirical Formula: |
Pb1.5Tl0.5AgAs2S5 |
| Environment: |
Of hydrothermal origin, in crystalline dolomite. |
| IMA Status: |
Valid Species (Pre-IMA) 1912 |
| Locality: |
From the Lengenbach quarry, Binntal, Valais, Switzerland. Link to MinDat.org Location Data. |
| Name Origin: |
For Dr. Frederick Henry Hatch (1864-1932), American geologist and mining engineer. |
| Name Pronunciation: |
Hatchite  |
| Synonym: |
ICSD 27304 |
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PDF 25-463 |
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Hatchite Image |
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Images:
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Images:
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Hatchite
Comments: Specular, black aggregate of hatchite crystals with red realgar on white dolomite.
Location: Lengenbach quarry, Binntal, Valais, Switzerland.
Scale: Big crystal 1.5 mm.
© Walter Gabriel |
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Hatchite Crystallography
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| Axial Ratios: |
a:b:c =1.1951:1:1.028 |
| Cell Dimensions: |
a = 9.37, b = 7.84, c = 8.06, Z = 2; alpha = 66.25°, beta = 63.2°, gamma = 84.58° V = 481.57 Den(Calc)= 5.73 |
| Crystal System: |
Triclinic - Pinacoidal H-M Symbol ( 1) Space Group: P1 or P1 |
| X Ray Diffraction: |
By Intensity(I/Io): 3.314(1), 2.863(0.9), 3.401(0.8),3.569(0.4), 4.28(0.3), 4.54(0.3), 3.75(0.2), |
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Physical Properties of Hatchite
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| Color: |
Lead gray, Grayish black. |
| Diaphaneity: |
Opaque to subtranslucent |
| Habit: |
Euhedral Crystals - Occurs as well-formed crystals showing good external form. |
| Habit: |
Microscopic Crystals - Crystals visible only with microscopes. |
| Luster: |
Metallic |
| Streak: |
dark brown |
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Optical Properties of Hatchite
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| RL Color: |
Dark red in transmitted light. |
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Calculated Properties of Hatchite
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| Electron Density: |
Bulk Density (Electron Density)=4.92 gm/cc
note: Specific Gravity of Hatchite =5.74 gm/cc.
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| Fermion Index: |
Fermion Index = 0.08
Boson Index = 0.92 |
| Photoelectric: |
PEHatchite = 929.19 barns/electron
U=PEHatchite x rElectron Density=4,576.00 barns/cc.
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| Radioactivity: |
GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Hatchite is Not Radioactive |
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Hatchite Classification
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| Dana Class: |
03.05.08.02 (03)Sulfides - Sulfosalts |
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(03.05)where 2.5 < z/y < 3 - (A+)i (A++)j [By Cz], A=metals, B=semi-metals, C=non-metals |
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(03.05.08)Dana Group |
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03.05.08.01 Wallisite PbTl(Cu,Ag)As2S5 P1 1 |
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03.05.08.02 Hatchite (Pb,Tl)2AgAs2S5 P1 or P1 1 |
| Strunz Class: |
02.GC.05 02 - SULFIDES and SULFOSALTS (sulfides, selenides, tellurides; arsenides, antimonides, bismuthides; sulfarsenites, sulf |
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02.G - Sulfarsenites, sulfantimonites, sulfbismuthites |
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02.GC -Poly-sulfarsenites |
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02.GC.05 Hatchite (Pb,Tl)2AgAs2S5 P1 or P1 1 |
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02.GC.05 Wallisite PbTl(Cu,Ag)As2S5 P1 1 |
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Other Hatchite Information
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| References: |
NAME( AntBidBlaNic1) PHYS. PROP.(AntBidBlaNic1) OPTIC PROP.(AntBidBlaNic1) |
| See Also: |
Links to other databases for Hatchite :
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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Hatchite
(Pb,Tl)2AgAs2S5
Dana No: 03.05.08.02 Strunz No: 02.GC.05
Locality:
Notes:
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