Mineralogy Database

Hatchite Mineral Data

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General Hatchite Information

Help on Chemical  Formula: Chemical Formula: (Pb,Tl)2AgAs2S5
Help on Composition: Composition: Molecular Weight = 831.03 gm
   Thallium  12.30 %  Tl
   Silver    12.98 %  Ag
   Arsenic   18.03 %  As
   Lead      37.40 %  Pb
   Sulfur    19.29 %  S
            100.00 % 
Help on Empirical Formula: Empirical Formula: Pb1.5Tl0.5AgAs2S5
Help on Environment: Environment: Of hydrothermal origin, in crystalline dolomite.
Help on IMA Status: IMA Status: Valid Species (Pre-IMA) 1912
Help on Locality: Locality: From the Lengenbach quarry, Binntal, Valais, Switzerland. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: For Dr. Frederick Henry Hatch (1864-1932), American geologist and mining engineer.
Help on Name Pronunciation: Name Pronunciation: Hatchite Say HATCHITE
Help on Synonym: Synonym: ICSD 27304
  PDF 25-463

Hatchite Image

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Comments: Platy microcrystal aggregate of hatchite.
Location: Lengenbach Quarry, Binnental, Valais, Switzerland. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

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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

Hatchite Crystallography

Help on Axial Ratios: Axial Ratios: a:b:c =1.1951:1:1.028
Help on Cell Dimensions: 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
Help on Crystal System: Crystal System: Triclinic - Pinacoidal H-M Symbol ( 1) Space Group: P1 or P1
Help on X Ray Diffraction: 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),

Physical Properties of Hatchite

Help on Color: Color: Lead gray, Grayish black.
Help on Diaphaneity: Diaphaneity: Opaque to subtranslucent
Help on Habit: Habit: Euhedral Crystals - Occurs as well-formed crystals showing good external form.
Help on Habit: Habit: Microscopic Crystals - Crystals visible only with microscopes.
Help on Luster: Luster: Metallic
Help on Streak: Streak: dark brown

Optical Properties of Hatchite

Help on RL Color: RL Color: Dark red in transmitted light.

Calculated Properties of Hatchite

Help on Electron Density: Electron Density: Bulk Density (Electron Density)=4.92 gm/cc
note: Specific Gravity of Hatchite =5.74 gm/cc.
Help on Fermion Index: Fermion Index: Fermion Index = 0.08
Boson Index = 0.92
Help on Photoelectric: Photoelectric: PEHatchite = 929.19 barns/electron
U=PEHatchite x rElectron Density=4,576.00 barns/cc.
Help on Radioactivity: Radioactivity: GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Hatchite is Not Radioactive

Hatchite Classification

Help on  Dana Class: Dana Class: (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
  (03.05.08)Dana Group Wallisite PbTl(Cu,Ag)As2S5 P1 1 Hatchite (Pb,Tl)2AgAs2S5 P1 or P1 1
Help on  Strunz Class: Strunz Class: 02.GC.05 02 - SULFIDES and SULFOSALTS (sulfides, selenides, tellurides; arsenides, antimonides, bismuthides; sulfarsenites, sulf
  02.G - Sulfarsenites, sulfantimonites, sulfbismuthites
  02.GC -Poly-sulfarsenites
02.GC.05 Hatchite (Pb,Tl)2AgAs2S5 P1 or P1 1
02.GC.05 Wallisite PbTl(Cu,Ag)As2S5 P1 1

Other Hatchite Information

Help on References: References: NAME( AntBidBlaNic1) PHYS. PROP.(AntBidBlaNic1) OPTIC PROP.(AntBidBlaNic1)
Help on See Also: 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

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Dana No: Strunz No: 02.GC.05





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