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Karpatite Mineral Data
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General Karpatite Information
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 Chemical Formula: |
C24H12 |
| Composition: |
Molecular Weight = 300.36 gm |
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Hydrogen 4.03 % H |
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Carbon 95.97 % C |
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______ |
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100.00 % |
| Empirical Formula: |
C24H12 |
| Environment: |
Crystallized hydrocarbon composed of coronene (C24H12, 7- member benzene ring. |
| IMA Status: |
Valid Species (Pre-IMA) 1955 |
| Locality: |
Transcarpatinian Alps, Russia. Link to MinDat.org Location Data. |
| Name Origin: |
Named for the locality. |
| Name Pronunciation: |
Karpatite + Pronunciation  |
| Synonym: |
Carpathite |
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Coronene |
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Pendletonite |
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Karpatite Image |
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Images:
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Karpatite
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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Images:
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Karpatite
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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Images:
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Karpatite
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 |
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Karpatite Crystallography
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| Axial Ratios: |
a:b:c =3.4315:1:2.1426 |
| Cell Dimensions: |
a = 16.094, b = 4.69, c = 10.049, Z = 2; beta = 110.79° V = 709.12 Den(Calc)= 1.41 |
| Crystal System: |
Monoclinic - Prismatic H-M Symbol (2/m) Space Group: P 21/a |
| X Ray Diffraction: |
By Intensity(I/Io): 7.43(1), 9.5(1), 3.96(0.4), |
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Physical Properties of Karpatite
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| Cleavage: |
{001} Perfect |
| Color: |
Yellow, Yellow green, Black. |
| Density: |
1.35 |
| Diaphaneity: |
Transparent |
| Fracture: |
Brittle - Generally displayed by glasses and most non-metallic minerals. |
| Habit: |
Acicular - Occurs as needle-like crystals. |
| Habit: |
Prismatic - Crystals Shaped like Slender Prisms (e.g. tourmaline). |
| Hardness: |
1.5 - Between Talc and Gypsum |
| Luminescence: |
Fluorescent, Short UV=vivid electric blue to blue-green, Long UV=vivid electric blue to blue-green. |
| Luster: |
Vitreous - Adamantine |
| Streak: |
yellow white |
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Optical Properties of Karpatite
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| Optical Data: |
Biaxial (+/-), a=1.76-1.78, b=1.78-1.982, g=2.05-2.15, bire=0.2900-0.3700 |
| Pleochroism (x): |
colorless. |
| Pleochroism (y): |
colorless. |
| Pleochroism (z): |
colorless. |
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Calculated Properties of Karpatite
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| Electron Density: |
Bulk Density (Electron Density)=1.46 gm/cc
note: Specific Gravity of Karpatite =1.41 gm/cc.
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| Fermion Index: |
Fermion Index = 0.01
Boson Index = 0.99 |
| Photoelectric: |
PEKarpatite = 0.15 barns/electron
U=PEKarpatite x rElectron Density= 0.21 barns/cc.
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| Radioactivity: |
GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Karpatite is Not Radioactive |
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Karpatite Classification
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| Dana Class: |
50.03.07.01 (50)Salts of Organic Acids |
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(50.03)(Hydrocarbons) |
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(50.03.07)Dana Group |
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50.03.07.01 Karpatite C24H12 P 21/a 2/m |
| Strunz Class: |
10.BA.30 10 - ORGANIC COMPOUNDS |
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10.B - Hydrocarbons |
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10.BA -Hydrocarbons |
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10.BA.30 Karpatite C24H12 P 21/a 2/m |
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Other Karpatite Information
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| References: |
NAME( Dana8) PHYS. PROP.(Dana8, AmMin v92:1262) OPTIC PROP.(Enc. of Minerals,2nd ed.,1990) |
| 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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Print or Cut-and-Paste your Karpatite Specimen Label here :
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Karpatite
C24H12
Dana No: 50.03.07.01 Strunz No: 10.BA.30
Locality:
Notes:
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