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Tertschite

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About TertschiteHide

Formula:
Ca4B10O19 · 20H2O
Colour:
Snow-white
Lustre:
Silky
Name:
Named in honor of Hermann Julius Tertsch (18 February 1880, Starý Petřín, Czech Republic - 14 December 1962, Vienna, Austria), professor of mineralogy, University of Vienna, Austria.
This page provides mineralogical data about Tertschite.


Classification of TertschiteHide

Approved, 'Grandfathered' (first described prior to 1959), Questionable
6.EB.20

6 : BORATES
E : Pentaborates
B : Ino-pentaborates
26.7.5.1

26 : HYDRATED BORATES CONTAINING HYDROXYL OR HALOGEN
7 : Miscellaneous

Physical Properties of TertschiteHide

Silky
Colour:
Snow-white

Optical Data of TertschiteHide

Type:
Biaxial
RI values:
nα = 1.502 nγ = 1.517
Max Birefringence:
δ = 0.015
Image shows birefringence interference colour range (at 30µm thickness)
and does not take into account mineral colouration.
Surface Relief:
Moderate
Dispersion:
relatively strong

Chemical Properties of TertschiteHide

Formula:
Ca4B10O19 · 20H2O

Type Occurrence of TertschiteHide

Other Language Names for TertschiteHide

German:Tertschit
Spanish:Tertschita

Related Minerals - Nickel-Strunz GroupingHide

6.EB.05Larderellite(NH4)B5O7(OH)2 · H2OMon.
6.EB.10EzcurriteNa4B10O17 · 7H2OTric. 1 : P1
6.EB.15ProbertiteNaCaB5O7(OH)4 · 3H2OMon. 2/m
6.EB.25PriceiteCa2B5O7(OH)5 · H2OMon. 2/m : P21/b

Other InformationHide

Health Risks:
No information on health risks for this material has been entered into the database. You should always treat mineral specimens with care.

References for TertschiteHide

Reference List:
Sort by Year (asc) | by Year (desc) | by Author (A-Z) | by Author (Z-A)
Meixner, H. (1952): Der Karinthin 18, 144-146. [http://www.landesmuseum.at/pdf_frei_remote/DerKarinthin_18_0001-0023.pdf]
Fortschritte der Mineralogie (1953), 31, 39-42.
American Mineralogist (1954): 39: 849.

Internet Links for TertschiteHide

Localities for TertschiteHide

This 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.

Locality ListHide

- This locality has map coordinates listed. - This locality has estimated coordinates. ⓘ - Click for 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). Struck out - Mineral was erroneously reported from this locality. Faded * - Never found at this locality but inferred to have existed at some point in the past (eg from pseudomorphs.)

All localities listed without proper references should be considered as questionable.
Turkey
 
  • Marmara Region
    • Balikesir Province
      • Bigadiç
CAHIT HELVACI & RICARDO N. ALONSO (2000) Borate Deposits of Turkey and Argentina; A Summary and Geological Comparison. Turkish Journal of Earth Sciences, Vol. 9, 2000, pp. 1-27
        • Faraşköy (Faraş)
Fortschritte der Mineralogie (1953), 31, 39-42.
Mineral and/or Locality  
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