Mineralogy Database

Karpatite Mineral Data

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General Karpatite Information

Help on Chemical  Formula: Chemical Formula: C24H12
Help on Composition: Composition: Molecular Weight = 300.36 gm
   Hydrogen   4.03 %  H
   Carbon    95.97 %  C
            100.00 % 
Help on Empirical Formula: Empirical Formula: C24H12
Help on Environment: Environment: Crystallized hydrocarbon composed of coronene (C24H12, 7- member benzene ring.
Help on IMA Status: IMA Status: Valid Species (Pre-IMA) 1955
Help on Locality: Locality: Transcarpatinian Alps, Russia. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named for the locality.
Help on Name Pronunciation: Name Pronunciation: Karpatite + Pronunciation Say KARPATITE
Help on Synonym: Synonym: Carpathite

Karpatite Image

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Comments: Pale greenish karpatite with minor red cinnabar.
Location: 4th of July mine, New Idria district, San Benito Co., California, USA. Scale: Picture size 5 mm.
© Thomas Witzke / Abraxas-Verlag

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Comments: Flat lying sprays of fibrous crystals of yellow karpatite to 2.8 cm in length on siliceous jasperoid with drusy quartz. Lower image taken using SW UV light.
Location: Los Picachos, near Picacho Peak, San Benito County, California, USA. Scale: 9.3 x 4.5 x 3.5 cm.
© John Veevaert

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Comments: Prismatic yellow karpatite (Ka) crystal on quartz (Qtz), cinnabar (Cin) and magnesite (Mgs)..
Location: Pichacho Peak Area, San Benito County, California, USA.. Scale: See Image.
© American Mineralogist

Karpatite Crystallography

Help on Axial Ratios: Axial Ratios: a:b:c =3.4315:1:2.1426
Help on Cell Dimensions: Cell Dimensions: a = 16.094, b = 4.69, c = 10.049, Z = 2; beta = 110.79° V = 709.12 Den(Calc)= 1.41
Help on Crystal System: Crystal System: Monoclinic - Prismatic H-M Symbol (2/m) Space Group: P 21/a
Help on X Ray Diffraction: X Ray Diffraction: By Intensity(I/Io): 7.43(1), 9.5(1), 3.96(0.4),

Physical Properties of Karpatite

Help on Cleavage: Cleavage: {001} Perfect
Help on Color: Color: Yellow, Yellow green, Black.
Help on Density: Density: 1.35
Help on Diaphaneity: Diaphaneity: Transparent
Help on Fracture: Fracture: Brittle - Generally displayed by glasses and most non-metallic minerals.
Help on Habit: Habit: Acicular - Occurs as needle-like crystals.
Help on Habit: Habit: Prismatic - Crystals Shaped like Slender Prisms (e.g. tourmaline).
Help on Hardness: Hardness: 1.5 - Between Talc and Gypsum
Help on Luminescence: Luminescence: Fluorescent, Short UV=vivid electric blue to blue-green, Long UV=vivid electric blue to blue-green.
Help on Luster: Luster: Vitreous - Adamantine
Help on Streak: Streak: yellow white

Optical Properties of Karpatite

Help on Optical Data: Optical Data: Biaxial (+/-), a=1.76-1.78, b=1.78-1.982, g=2.05-2.15, bire=0.2900-0.3700
Help on Pleochroism (x): Pleochroism (x): colorless.
Help on Pleochroism (y): Pleochroism (y): colorless.
Help on Pleochroism (z): Pleochroism (z): colorless.

Calculated Properties of Karpatite

Help on Electron Density: Electron Density: Bulk Density (Electron Density)=1.46 gm/cc
note: Specific Gravity of Karpatite =1.41 gm/cc.
Help on Fermion Index: Fermion Index: Fermion Index = 0.01
Boson Index = 0.99
Help on Photoelectric: Photoelectric: PEKarpatite = 0.15 barns/electron
U=PEKarpatite x rElectron Density= 0.21 barns/cc.
Help on Radioactivity: Radioactivity: GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Karpatite is Not Radioactive

Karpatite Classification

Help on  Dana Class: Dana Class: (50)Salts of Organic Acids
  (50.03.07)Dana Group Karpatite C24H12 P 21/a 2/m
Help on  Strunz Class: Strunz Class: 10.BA.30 10 - ORGANIC COMPOUNDS
  10.B - Hydrocarbons
  10.BA -Hydrocarbons
10.BA.30 Karpatite C24H12 P 21/a 2/m

Other Karpatite Information

Help on References: References: NAME( Dana8) PHYS. PROP.(Dana8, AmMin v92:1262) OPTIC PROP.(Enc. of Minerals,2nd ed.,1990)
Help on See Also: See Also: Links to other databases for Karpatite :
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: 10.BA.30





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