Ravatite
A valid IMA mineral species
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About Ravatite
Formula:
C14H10
structural formula: (CH)4C2(CH)2C2(CH)4, or C4H4C2C2H2C2C4H4
Colour:
Colourless to gray
Lustre:
Vitreous, Waxy
Hardness:
1
Specific Gravity:
1.11
Crystal System:
Monoclinic
Name:
Named after the village of Ravat, Tajikistan, where the mineral was discovered.
Forms in burning coal seams at < 50-60°C.
Known in organic chemistry as phenanthrene (a well-known polycyclic aromatic hydrocarbon (PAH), also known as tricyclo[8.4.0.02,7]tetradeca-1,3,5,7,9,11,13-heptaene).
Known in organic chemistry as phenanthrene (a well-known polycyclic aromatic hydrocarbon (PAH), also known as tricyclo[8.4.0.02,7]tetradeca-1,3,5,7,9,11,13-heptaene).
Unique Identifiers
Mindat ID:
3373
Long-form identifier:
mindat:1:1:3373:8
GUID
(UUID V4):
(UUID V4):
519306e4-ed01-41aa-b5b7-8ced574a540e
IMA Classification of Ravatite
Approved
Approval year:
1992
First published:
1993
Classification of Ravatite
10.BA.40
10 : ORGANIC COMPOUNDS
B : Hydrocarbons
A : Hydrocarbons
10 : ORGANIC COMPOUNDS
B : Hydrocarbons
A : Hydrocarbons
50.3.2.1
50 : ORGANIC COMPOUNDS
3 : Hydrocarbons
50 : ORGANIC COMPOUNDS
3 : Hydrocarbons
Mineral Symbols
As of 2021 there are now IMA–CNMNC approved mineral symbols (abbreviations) for each mineral species, useful for tables and diagrams.
| Symbol | Source | Reference |
|---|---|---|
| Rav | IMA–CNMNC | Warr, L.N. (2021). IMA–CNMNC approved mineral symbols. Mineralogical Magazine, 85(3), 291-320. doi:10.1180/mgm.2021.43 |
Physical Properties of Ravatite
Vitreous, Waxy
Transparency:
Transparent, Translucent
Colour:
Colourless to gray
Hardness:
1 on Mohs scale
Tenacity:
Waxy
Cleavage:
Perfect
{001}
{001}
Density:
1.11(2) g/cm3 (Measured) 1.207 g/cm3 (Calculated)
Comment:
Measured crystals are porous
Optical Data of Ravatite
Type:
Biaxial (+/-)
RI values:
nα = 1.750 nγ = 1.950
2V:
Measured: 90°
Max Birefringence:
δ = 0.200
Image shows birefringence interference colour range (at 30µm thickness)
and does not take into account mineral colouration.
and does not take into account mineral colouration.
Surface Relief:
Moderate
Dispersion:
r < v marked
Comments:
Soluble in organic fluids
Chemistry of Ravatite
Mindat Formula:
C14H10
structural formula: (CH)4C2(CH)2C2(CH)4, or C4H4C2C2H2C2C4H4
structural formula: (CH)4C2(CH)2C2(CH)4, or C4H4C2C2H2C2C4H4
Elements listed:
Crystallography of Ravatite
Crystal System:
Monoclinic
Class (H-M):
2 - Sphenoidal
Space Group:
P21
Setting:
P21
Cell Parameters:
a = 8.39 Å, b = 6.18 Å, c = 9.55 Å
β = 98.48°
β = 98.48°
Ratio:
a:b:c = 1.358 : 1 : 1.545
Unit Cell V:
489.76 ų (Calculated from Unit Cell)
Z:
2
Morphology:
Thin platelets with included air.
Comment:
Equivalent to synthetic phenanthrene
Crystal Structure
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2x2x2 | 3x3x3 | 4x4x4
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Data courtesy of the American Mineralogist Crystal Structure Database. Click on an AMCSD ID to view structure
| ID | Species | Reference | Link | Year | Locality | Pressure (GPa) | Temp (K) |
|---|---|---|---|---|---|---|---|
| 0009843 | Ravatite | Petricek V, Cisarova I, Hummel L, Kroupa J, Brezina B (1990) Oriental disorder in phenanthrene. Structure determination at 248, 295, 339 and 344 K Acta Crystallographica B46 830-832 |  | 1990 | synthetic | 0 | 293 |
CIF Raw Data - click here to close
X-Ray Powder Diffraction
Powder Diffraction Data:
| d-spacing | Intensity |
|---|---|
| 9.434 Å | (100) |
| 4.028 Å | (13) |
| 4.941 Å | (11) |
| 4.724 Å | (11) |
| 3.371 Å | (10) |
| 4.546 Å | (5) |
| 3.4441 Å | (3) |
Comments:
Ravat Village, Tajikistan. The data are from the type description. The data are impacted by preferred orientation.
Geological Environment
Paragenetic Mode(s):
| Paragenetic Mode | Earliest Age (Ga) |
|---|---|
| Stage 10a: Neoproterozoic oxygenation/terrestrial biosphere | <0.6 |
| 50 : Coal and/or oil shale minerals | <0.36 |
| Stage 10b: Anthropogenic minerals | <10 Ka |
| 54 : Coal and other mine fire minerals (see also #51 and #56) |
Type Occurrence of Ravatite
Place of Conservation of Type Material:
Freiberg Mining Academy (sample 74120).
Geological Setting of Type Material:
Burning lignite seams
Reference:
Nasdala, L., Pekov, I.V. (1993) Ravatite, C14H10, a new organic mineral species from Ravat, Tadzhikistan. European Journal of Mineralogy: 5: 699–705.
Synonyms of Ravatite
Other Language Names for Ravatite
German:Phenanthren
Ravatit
Ravatit
Spanish:Ravatita
Related Minerals - Strunz-mindat Grouping
| 10.BA. | Freitalite | C14H10 |
| 10.BA.05 | Fichtelite | C19H34 |
| 10.BA.10 | Branchite | C20H34 |
| 10.BA.15 | Dinite | C20H36 |
| 10.BA.20 | Idrialite | C22H14 |
| 10.BA.25 | Kratochvílite | C13H10 |
| 10.BA.30 | Carpathite | C24H12 |
| 10.BA.35 | Phylloretine | C18H18 |
| 10.BA.45 | Simonellite | C19H24 |
| 10.BA.50 | Evenkite | C21H44 |
| 10.BA.55 | Wampenite | C18H16 |
| 10.BA.60 | Scharizerite |
Fluorescence of Ravatite
white/yellow
Other Information
Health Risks:
No information on health risks for this material has been entered into the database. You should always treat mineral specimens with care.
Internet Links for Ravatite
mindat.org URL:
https://www.mindat.org/min-3373.html
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References for Ravatite
Reference List:
Localities for Ravatite
symbol to view information about a locality.
The Locality List
- This locality has map coordinates listed.
- This locality has estimated coordinates.
ⓘ - Click for references and further information on this occurrence.
? - Indicates mineral may be doubtful at this locality.
- Good crystals or important locality for species.
- World class for species or very significant.
(TL) - Type Locality for a valid mineral species.
(FRL) - First Recorded Locality for everything else (eg varieties).
All localities listed without proper references should be considered as questionable.
Czech Republic | |
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Germany | |
| |
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Poland | |
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Tajikistan (TL) | |
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Carola Mine, Döhlen, Freital, Sächsische Schweiz-Osterzgebirge, Saxony, Germany