Idrialite

C22H14
IMA status
  • Approved
  • Grandfathered
IMA symbol
Id
Discovered
1832
Also known as
  • Curtisite
  • Idrialiet
  • Idrialit
  • +1 more

Where it forms, where it's found

Type locality
Idria Mine (Idrija Mine)
  1. Idrija
  2. Slovenia

46.0031°, 14.0272°

15recorded occurrences
Source · OpenStreetMap

Physical

Hardness
123456789101.5/ 10 MOHS
  1. 1Talc
  2. 2Gypsum
  3. 3Calcite
  4. 4Fluorite
  5. 5Apatite
  6. 6Orthoclase
  7. 7Quartz
  8. 8Topaz
  9. 9Corundum
  10. 10Diamond
Colour
Greenish yellow

Optical

UV response
Green

Crystallography

Crystal system
Orthorhombic
Cell parameters
a = 8.07 Å · b = 6.42 Å · c = 27.75 Å
Ratio a:b:c
1 : 0.796 : 3.439
Comment

Space group not determined.

Chemical composition

Constituent elements
Mass composition breakdown
ElementAtoms At. mass g/mol Mass g/molMass share
6CCarbonCarbon2212.011264.242
94.93%
1HHydrogenHydrogen141.00814.112
5.07%
Total278.354100.00%

Mass share = atoms × atomic mass ÷ molar mass × 100

From IMA formula

Synonyms

  • Curtisite
  • Idrialiet
  • Idrialit
  • Idrialith

In other languages

German
Idrialin · Idrialit · Quecksilberbranderz
Spanish
Idrialita
Italian
Curtisite · Idrialite · Picene
Japanese
イドリア石
Chinese
綠地蠟

Classification

Strunz
10th ed.

10.BA.20

  • 10Organic CompoundsClass
  • 10.BHydrocarbonsDivision
  • 10.BAHydrocarbonsGroup
  • 10.BA.20IdrialiteSpecies
Dana
8th ed.

50.03.10

  • 50Organic CompoundsClass
  • 50.03HydrocarbonsType
  • 50.03.10— unnamed intermediate level —Group
  • 50.03.10IdrialiteSpecies
CIM

32.5

  • 32Hydrocarbons, Resins and other Organic CompoundsClass
  • 32.5— unnamed intermediate level —Group
  • 32.5IdrialiteSpecies

Literature, links & citation

Citations
  1. 1832Dumas, J. (1832) Recherches sur les combinaisons de l'hydrogène et du carbone. Annales de Chimie et de Physique: 50: 182-197.
  2. 1832Dumas, J.(1832) Ueber die Verbindungen von Wasserstoff und Kohlenstoff (Naphthalin, Paranaphthalin und Idrialin). Annalen der Physik: 102: 517–530.
  3. 1883Scharizer, R. (1883) Idrialit. Jahrb. f. Mineral.: 1: 31.
  4. 1888Zepharovich, V. v. (1888) Ueber Trona, Idrialin und Hydrozinkit. Zeitschrift für Krystallographie, Mineralogie und Petrographie, 13 (1-6). 135-144 doi:10.1524/zkri.1888.13.1.135DOI: 10.1524/zkri.1888.13.1.135
  5. 1930Wright, F. E., Allen, E. T. (1930) Curtisite, a new organic mineral from Skaggs Springs, Sonoma County, California. American Mineralogist, 15 (5) 169-173
Cite this entry
@misc{mineral2026,
  author    = {Mineral Index editorial board},
  title     = {Idrialite — Mineral Index},
  year      = {2026},
  url       = {https://mineralindex.org/minerals/idrialite-2003},
  note      = {Accessed 2026-05-11}
}