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Carpathite

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Formula:
C
 
24
H
 
12
System:MonoclinicColour:Yellow, yellowish brown
Hardness:
Name:Name for Carpathian mountains.


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.BA.30

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

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

32 :
mindat.org URL:http://www.mindat.org/min-2162.html
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Type Occurrence of Carpathite

Type Locality:Olenevo, Svalyavskyi Raion, Zakarpats'ka Oblast' (Transcarpathian Oblasť; Zakarpattia), Ukraine
Year of Discovery:1955
Geological Setting of type material:In cavities at the contact of diorite porphyry with argillites.
Associated Minerals at type locality:
IdrialiteCalciteBaryteQuartzCinnabar
Metacinnabar

Physical Properties of Carpathite

Lustre:Vitreous
Diaphaneity (Transparency):Translucent
Colour:Yellow, yellowish brown
Hardness (Mohs):
Tenacity:Flexible
Cleavage:Perfect
on {001}, {100}, {201}
Fracture:Splintery
Density (measured):1.35 - 1.40 g/cm3
Density (calculated):1.29 g/cm3

Crystallography of Carpathite

Crystal System:Monoclinic
Class (H-M):2/m - Prismatic
Space Group:P21/b {P1 1 21/b} {P21/c} {P1 21/c 1} {P21/a}
Space Group Setting:P21/c
Cell Parameters:a = 10.035Å, b = 4.695Å, c = 16.014Å
β = 112°
Ratio:a:b:c = 2.137 : 1 : 3.411
Unit Cell Volume:V 699.55 ų (Calculated from Unit Cell)
Z:2
Morphology:Crystals are acicular, thin tabular parallel to [001], showing {001}, {100}, {201}, many other forms, to 1 cm; typically in bladed groups and fibrous radiating aggregates.
Comment:sp gr. P21/c or P2/c (synthetic)
X-Ray Powder Diffraction:
d-spacingIntensity
9.40 (100)
7.52 (80)
7.25 (50)
3.97 (70)
3.52 (90)
3.43 (40)
3.05 (60)
Comments:Olenevo, Ukraine.

Optical Data of Carpathite

Type:Biaxial (+/-)
RI values: nα = 1.760 - 1.780 nβ = 1.977 - 1.982 nγ = 2.050 - 2.150
2V:Measured: 96° to 115°
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:r > v, relatively strong

Chemical Properties of Carpathite

Formula:
C
 
24
H
 
12
Simplified for copy/paste:C24H12
Essential elements:C, H
All elements listed in formula:C, H
CAS Registry number:191-07-1

CAS Registry numbers are published by the American Chemical Society
Analytical Data:Olenevo, Ukraine.
C (96.04)
H (4.04)
Total (100.08)

Relationship of Carpathite to other Species

Related Minerals - Nickel-Strunz Grouping):

- +
10.BA.05Fichtelite
C
 
19
H
 
34
10.BA.10Hartite
C
 
20
H
 
34
10.BA.15Dinite
C
 
20
H
 
36
10.BA.20Idrialite
C
 
22
H
 
14
10.BA.25Kratochvílite
C
 
13
H
 
10
10.BA.30Karpatite
10.BA.35Phylloretine
C
 
18
H
 
18
10.BA.40Ravatite
C
 
14
H
 
10
10.BA.45Simonellite
C
 
19
H
 
24
10.BA.50Evenkite
C
 
21
H
 
44
Related Minerals - Hey's Index Grouping:

- +
32.1Evenkite
C
 
21
H
 
44
32.2 Fitchtelite
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
 
6
H
 
4
(CO)
 
2
NH
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
 
31
H
 
32
N
 
4
)

Other Names for Carpathite

Synonyms:
CoroneneKarpatitePendletonite
Other Languages:
German:Carpathit
Karpatit
Pendletonit
Japanese:自然コロネン
カルパチア石
Spanish:Carpathita
Karpatita
Pendletonita

Other Information

Fluorescence in UV light:Fluoresces sky-blue under LW and SW UV.
Other Information:Flammable.
Health Warning:No information on health risks for this material has been entered into the database. You should always treat mineral specimens with care.
External LinksSearch for toxicity information at the United States National Library of Medicine

References for Carpathite

Reference List:

- +
Piotrovsky, G.L. (1955): Karpatite – a new organic mineral from Transcarpathia. Lvovskoe geol. Obshch., Mineral. Sbornik, 9, 120–127 (in Russian).

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
  • Karpatite details from Handbook of Mineralogy (PDF)
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  • Localities for Carpathite

    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.
    (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.
    Russia
     
    • Far-Eastern Region
      • Chukotskii Autonomous Okrug
        • Koryakskoe plateau
          • Tamvatnei massif
    Pavel M. Kartashov data
    Slovakia
     
    • Prešov Region
      • Prešov Co.
        • Červenica
    Duda,R. et. all.,1981: MIneralogia severnej časti Slanských vrchov. Min.Slovaca,Monografia 2, Bratislava, 98p
      • Vranov nad Topľou Co.
        • Juskova 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
     
    • Zakarpats'ka Oblast' (Transcarpathian Oblasť; Zakarpattia)
      • Svalyavskyi Raion
    American Mineralogist (1957), 42, 120 ; Pekov, I. (1998) Minerals First discovered on the territory of the former Soviet Union 369p. Ocean Pictures, Moscow
    USA
     
    • California
      • San Benito Co.
        • Diablo Range
          • New Idria District
    Chuck Trantham specimen
            • Picacho Peak
              • Clear Creek area
                • Hernandez
                  • Flint group (Boston; Fourth of July; Monterey; Andy Johnson claim; Red Rock; Clear Creek)
    Manuel Robbins (1994) Fluorescence: Gems and Minerals Under Ultraviolet Light. Geoscience Press.
    Murdoch, Joseph and Geissman, T.A. (1967) Pendletonite, a new hydrocarbon mineral from California. American Mineralogist: 52: 611-616; Murdoch, Joseph and Geissman, TA. (1968) Pendletonite: a correction American Mineralogist: 53: 1061-1062; Pemberton, H. Earl (1983), Minerals of California; Van Nostrand Reinholt Press: 343; 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.
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