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Carpathite

Big Photo

Picacho Mine (Benta; Hernandez; Ramirez; Bonanza; Los Picachos), New Idria District, San Benito Co., California, USA
© Antonio Borrelli

Show Carpathite Photos (10)
Formula:
C
 
24
H
 
12
System:MonoclinicHardness:1½


Chemically identical to Coronene, a polycyclic aromatic hydrocarbon (PAH).

The name replaces pendletonite (CNMMN, 1971), karpatite and coronene.

Classification of Carpathite

IMA status:Approved
Strunz 8th edition ID:9/B.02-60
Nickel-Strunz 10th (pending) edition ID:10.B0.30

10 : ORGANIC COMPOUNDS
B : Hydrocarbons
0 :
Dana 8th edition ID:50.3.7.1

50 : ORGANIC COMPOUNDS
3 : Hydrocarbons
Hey's CIM Ref.:32.6

32 :
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Type Occurrence of Carpathite

Type Locality:Olenevo Village, Transcarpathian Oblast', Ukraine
Year of Discovery:1955

Physical Properties of Carpathite

Hardness (Mohs):1½

Crystallography of Carpathite

Crystal System:Monoclinic
Cell Parameters:a = 10.03Å, b = 4.69Å, c = 16.01Å
β = 111°
Ratio:a:b:c = 2.139 : 1 : 3.414
Unit Cell Volume:V 703.10 ų (Calculated from Unit Cell)

Optical Data of Carpathite

Type:Biaxial (+/-)
RI values: nα = 1.760 - 1.780 nβ = 1.780 - 1.982 nγ = 2.050 - 2.150
Maximum Birefringence:δ = 0.290 - 0.370

Chart shows birefringence interference colour range (at 30µm thickness) and does not take into account mineral colouration.
Surface Relief:Very High
Dispersion:relatively strong

Chemical Properties of Carpathite

Formula:
C
 
24
H
 
12
Essential elements:C, H
All elements listed in formula:C, H

Relationship of Carpathite to other Species

Related Minerals - Hey's Index Grouping:
32.1Evenkite
C
 
21
H
 
44
32.2 Fitchtelite
C
 
19
H
 
34
32.3Simonellite
C
 
19
H
 
24
32.4Kratochvílite
C
 
13
H
 
10
32.5Idrialite
C
 
22
H
 
14
32.7Refikite
C
 
20
H
 
32
O
 
2
32.8Flagstaffite
C
 
10
H
 
22
O
 
3
32.9Hoelite
C
 
14
H
 
8
O
 
2
32.10Kladnoite
C
 
8
H
 
5
O
 
2
N
32.11Acetamide
CH
 
3
CONH
 
2
32.12Guanine
C
 
5
H
 
5
N
 
5
O
32.13Urea
CO(NH
 
2
)
 
2
32.14Uricite
C
 
5
H
 
4
N
 
4
O
 
3
32.15Abelsonite
Ni[C
 
32
H
 
36
N
 
4
]

Other Names for Carpathite

Synonyms:
CoroneneKarpatitePendletonite
German names:
CarpathitKarpatitPendletonit
Spanish names:
CarpathitaKarpatitaPendletonita

Other Information

Health Warning:No information on health risks for this material has been entered into the database. You should always treat mineral specimens with care.

References for Carpathite

Reference List:Murdoch, Joseph and Geissman, T.A. (1967) Pendletonite, a new hydrocarbon mineral from California. American Mineralogist: 52: 611-616.

Frank-Kamenetski, V.A., S.K. Filatov & Y.L. Giller (1967), The crystal structure and chemical formula of carpathite (In Russian)(abstract): American Mineralogist (1969): 54: 329.

Murdoch, Joseph and Geissman, TA. (1968) Pendletonite: a correction American Mineralogist: 53: 1061-1062.

American Mineralogist (1979): 64: 655.

Mineralogy and Petrology: 66: 325-332.

Mineralogical Magazine 38 (1971), 103 [CNMMN, Nomenclature].

Echigo, T., Kimata, M., Maruoka, T. (2007): Crystal-chemical and carbon-isotopic characteristics of karpatite (C24H12) from the Picacho Peak Area, San Benito County, California: Evidences for the hydrothermal formation. American Mineralogist, 92, 1262-1269.

Internet Links for Carpathite

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  • Raman and XRD data at RRUFF project
  • American Mineralogist Crystal Structure Database
  • Search for Carpathite in the Natural History Museum (London) online catalogue
  • Karpatite details from Handbook of Mineralogy (PDF)
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    Localities for Carpathite

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    The map shows a selection of localities that have latitude and longitude coordinates recorded. Click on the symbol to view information about a locality. The symbol next to localities in the list can be used to jump to that position on the map.
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    (TL) indicates type locality. ? indicates mineral may be doubtful at this locality. All other localities listed without reference should be considered as uncertain and unproven until references can be found.
    Slovakia
     
    • Prešov Region
      • Northern Slanské Mts
        • Červenica (Czerwenitza)
    		Duda,R. et. all.,1981: MIneralogia severnej časti Slanských vrchov. Min.Slovaca,Monografia 2, Bratislava, 98p
        • Jusková Voľa
    		Koděra, M. et al., 1986 a 1990 : Topografická mineralógia Slovenska, diel 1- 3, Veda – Vydavateľstvo SAV, Bratislava, 1990, 1 – 1590k
    Ďuďa,R., Kaličiaková,E., 1987: Mineralogicko – paragenetické pomery Hg ložiska Merník. Min.Slovaca, 19,5,423 – 442
    Ukraine
     
    • Transcarpathian Oblast'
    		American Mineralogist (1957), 42, 120
    USA
     
    • California
      • San Benito Co.
        • New Idria District
    		No reference listed
    J. Murdoch : "Pendletonite, a new hydrocarbon mineral from California", Amer. Miner. , 1967, 52, 611; Echigo, T., Kimata, M., Maruoka, T. (2007): Crystal-chemical and carbon-isotopic characteristics of karpatite (C24H12) from the Picacho Peak Area, San Benito County, California: Evidences for the hydrothermal formation. American Mineralogist, 92, 1262-1269
    Mineral and/or Locality
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