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Hartite

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Formula:
C20H34
System:
Triclinic
Colour:
white, grey, yellowish ...
Hardness:
1
Name:
For the type locality
A diterpene hydrocarbon originally described by Haidinger (1841).

Classification of Hartite

Valid - first described prior to 1959 (pre-IMA) - "Grandfathered"
10.BA.10

10 : ORGANIC COMPOUNDS
B : Hydrocarbons
A : Hydrocarbons
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Type Occurrence of Hartite

Place of Conservation of Type Material:
Krahuletz Museum, Eggenburg, Austria

Occurrences of Hartite

Geological Setting:
in lignite seams and fractures in fossil coalified and silicified tree trunks

Physical Properties of Hartite

Vitreous
Diaphaneity (Transparency):
Translucent
Colour:
white, grey, yellowish grey, colourless
Hardness (Mohs):
1
Tenacity:
Waxy
Cleavage:
Very Good
Density:
1.036 - 1.06 g/cm3 (Measured)    1.064 g/cm3 (Calculated)

Crystallography of Hartite

Crystal System:
Triclinic
Class (H-M):
1 - Pedial
Space Group:
P1
Cell Parameters:
a = 11.407Å, b = 20.952Å, c = 7.406Å
α = 93.941°, β = 100.75°, γ = 80.499°
Ratio:
a:b:c = 0.544 : 1 : 0.353
Z:
4
Morphology:
complex flattened to needlelike crystals to 8 mm (26 forms noted), lamellar to coarse crystalline masses or coatings
X-Ray Powder Diffraction Data:
d-spacingIntensity
10.38 (34)
6.59 (33)
6.11 (18)
5.58 (17)
5.54 (100)
3.446 (13)
3.850 (11)
(
Comments:
recorded on material from Bílina, Czech Republic

Optical Data of Hartite

Type:
Biaxial (+)
RI values:
nα = 1.546 nβ = 1.555 nγ = 1.587
2V:
Measured: 57°
Max Birefringence:
δ = 0.041
Image shows birefringence interference colour range (at 30µm thickness) and does not take into account mineral colouration.
Surface Relief:
Low
Dispersion:
r > v

Chemical Properties of Hartite

Formula:
C20H34
Essential elements:
All elements listed in formula:

Relationship of Hartite to other Species

10.BA.05FichteliteC19H34
10.BA.15DiniteC20H36
10.BA.20IdrialiteC22H14
10.BA.25KratochvíliteC13H10
10.BA.30CarpathiteC24H12
10.BA.30Karpatite
10.BA.35PhylloretineC18H18
10.BA.40RavatiteC14H10
10.BA.45SimonelliteC19H24
10.BA.50EvenkiteC21H44

Other Names for Hartite

Name in Other Languages:

Other Information

Thermal Behaviour:
melting point: 71 - 71.5 °C
Health Risks:
No information on health risks for this material has been entered into the database. You should always treat mineral specimens with care.
Industrial Uses:
none

References for Hartite

Reference List:
Haidinger, W. (1841): Ueber den Hartit, eine neue Species aus der Ordnung der Erdharze. Annalen der Physik und Chemie, 130, 261-265.

C. Hintze: Handbuch der Mineralogie, Vol. 1, de Gruyter (Berlin), 1933, pp. 1358-1360

Bouška V, Císařová I, Skála R, Dvořák Z, Zelinka J, Zák K (1998): Hartite from Bílina. American Mineralogist 83, 1340-1346.

J. W. Anthony, R. A. Bideaux, K. W. Bladh, M. C. Nichols: Handbook of Mineralogy, Vol. 5, Mineral Data Publishing (Tucson, AZ), 2003

Internet Links for Hartite

Localities for Hartite

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 for a valid mineral species. (FRL) indicates first recorded locality for everything else. ? 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.
Austria (TL)
 
  • Lower Austria
    • Industrieviertel
      • Enzenreith
        • Hart
W. v. Haidinger: Pogg. Ann. 54 (1841)
  • Styria
    • Bruck an der Mur
      • Aflenz Kurort
        • Turnau
          • Au
American Mineralogist Dec (1998) Vol. 83 No. 11-12. p. 1340-1346
J. W. Anthony et al.: Handbook of Mineralogy, Vol. 5 (2003)
    • Köflach
      • Köflach - Voitsberg lignite deposit
R. Exel: Die Mineralien und Erzlagerstätten Österreichs (1993)
Czech Republic
 
  • Bohemia (Böhmen; Boehmen)
    • Ústí Region
      • Bílina (Bilin)
Bouška, V., Dvořák, Z.: Nerosty severočeské hěndouhelné pánve. Praha: Severočeské doly, a.s., 160 s.
Bouška, V., Dvořák, Z.: Nerosty severočeské hěndouhelné pánve. Praha: Severočeské doly, a.s., 160 s.
Germany
 
  • Saxony-Anhalt
    • Halle
      • Amsdorf
Huhle, H. & G. Hohndorf (2013): Interessante Mineralienfunde aus dem Braunkohletagebau Amsdorf bei Halle a.d. Saale. Mineralien-Welt, 24( 6), 118-129.
Hungary
 
  • Borsod-Abaúj-Zemplén Co.
    • Borsodi Mts
GEODA 2005/3
Italy
 
  • Tuscany
    • Arezzo Province
      • Valdarno (Val d'Arno)
        • Cavriglia
          • Santa Barbara lignite District
J. W. Anthony et al.: Handbook of Mineralogy, Vol. 5 (2003)
    • Pisa Province
      • Chianni
Orlandi P., (2005). "Geositi minerari e mineralogici della provincia di Pisa" in La geologia della provincia di Pisa. Cartografia, geositi e banche dati, pp. 55-280, Provincia di Pisa, 2005
  • Umbria
    • Terni Province
J. W. Anthony et al.: Handbook of Mineralogy, Vol. 5 (2003)
Mineral and/or Locality  
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