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Idrialite

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Skaggs Springs Mine, Skaggs Springs, Sonoma Co., California, USA
© Caltech

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Formula:
C
 
22
H
 
14
System:OrthorhombicColour:Greenish yellow
Hardness:1½


Possibly a complex mixture of polycyclic aromatic hydrocarbons.

Classification of Idrialite

IMA status:Valid - first described prior to 1959 (pre-IMA) - "Grandfathered"
Strunz 8th edition ID:9/B.02-70
Nickel-Strunz 10th (pending) edition ID:10.BA.20

10 : ORGANIC COMPOUNDS
B : Hydrocarbons
A : Hydrocarbons
Dana 7th edition ID:50.3.8.1
Dana 8th edition ID:50.3.8.1

50 : ORGANIC COMPOUNDS
3 : Hydrocarbons
Hey's CIM Ref.:32.5

32 :
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Type Occurrence of Idrialite

Type Locality:Idria Mine (Idrija Mine), Idria, Slovenia
Year of Discovery:1832

Physical Properties of Idrialite

Lustre:Adamantine, Vitreous
Colour:Greenish yellow
Hardness (Mohs):1½

Crystallography of Idrialite

Crystal System:Orthorhombic
Cell Parameters:a = 8.07Å, b = 6.42Å, c = 27.75Å
Ratio:a:b:c = 1.257 : 1 : 4.322
Unit Cell Volume:V 1,437.71 ų (Calculated from Unit Cell)

Chemical Properties of Idrialite

Formula:
C
 
22
H
 
14
Essential elements:C, H
All elements listed in formula:C, H

Relationship of Idrialite 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.25Kratochvílite
C
 
13
H
 
10
10.BA.30Karpatite
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
C
 
19
H
 
34
32.3Simonellite
C
 
19
H
 
24
32.4Kratochvílite
C
 
13
H
 
10
32.6Carpathite
C
 
24
H
 
12
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 Idrialite

Synonyms:
Curtisite
German names:
Idrialit
Spanish names:
Idrialita

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 Idrialite

Reference List:Wright, F.E. & E.T. Allen (1925), Curtisite, a new organic mineral from Skaggs Springs, Sonoma County, California (abstract): American Mineralogist: 11: 67 (1925)…American Mineralogist: 15: 169-173 (1930).

Geissman, T.A., K.Y. Sun & J. Murdoch (1967), Organic minerals. Picine and chrysene as constituents of the mineral Curtisite (idrialite): Experentia: 23: 793-794.

American Mineralogist: 55 (1970): 1073.

American Mineralogist (1976): 61: 1055.

Internet Links for Idrialite

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

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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.
    France
     
    • Provence-Alpes-Côte d'Azur
      • Hautes-Alpes
        • Gap
    Slovakia
     
    • Prešov Region
      • Northern Slanské Mts
        • Červenica (Czerwenitza)
          • Dubník
    		Koděra, M. et al., 1986 a 1990 : Topografická mineralógia Slovenska, diel 1- 3, Veda – Vydavateľstvo SAV, Bratislava, 1990, 1 – 1590
    Ďuďa,R., Kaličiaková,E., 1987: Mineralogicko – paragenetické pomery Hg ložiska Merník. Min.Slovaca, 19,5,423 – 442
    Slovenia
     
    • Idria
    		[NJMM (1965), 19; MinRec 22:207]
    USA
     
    • California
      • Lake Co.
    		www.mineralsocal.org
      • San Benito Co.
        • New Idria District
          • Idria
    		www.mineralsocal.org
      • San Francisco Co.
    		www.missourigeologists.org/Min-Loc1-2005.pdf.
      • Sonoma Co.
        • Skaggs Springs
    Mineral and/or Locality
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