Tertschite Mineral Data

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General Tertschite Information

Chemical Formula:

Ca4B10O19•20(H2O)

Composition:

Molecular Weight = 932.71 gm

Calcium 17.19 % Ca 24.05 % CaO

Boron 11.59 % B 37.32 % B₂O₃

Hydrogen 4.32 % H 38.63 % H₂O

Oxygen 66.90 % O

______ ______

100.00 % 100.00 % = TOTAL OXIDE

Empirical Formula:

Ca₄B₁₀O₁₉•20(H₂O)

IMA Status:

Valid Species (Pre-IMA) 1953

Locality:

Kurtpinari mine, Faras, Turkey. Link to MinDat.org Location Data.

Name Origin:

Named for Herman Tertsch (1880-1962), Austrian mineralogist.

Name Pronunciation:

Tertschite + Pronunciation

Tertschite Image

Images:

Tertschite

Comments: Bright white fibrous powdery tertschite.
Location: Kurtpinari Mine, Faras, Balikesir, Turkey. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Tertschite Crystallography

Crystal System:

MonoclinicSpace Group: Unk

Physical Properties of Tertschite

Color:

Snow white.

Habit:

Fibrous - Crystals made up of fibers.

Luminescence:

Fluorescent and Photoluminescent, Short UV=blue violet.

Luster:

Silky

Streak:

white

Optical Properties of Tertschite

Optical Data:

Biaxial (?), a=1.502, g=1.517, bire=0.0150

Calculated Properties of Tertschite

Fermion Index:

Fermion Index = 0.02
Boson Index = 0.98

Photoelectric:

PE_Tertschite= 2.30 barns/electron
U=PE_Tertschite x rElectron Density= . barns/cc.

Radioactivity:

GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Tertschite is Not Radioactive

Tertschite Classification

Dana Class:

26.07.05.01 (26)Hydrated Borates Containing Hydroxyl or Halogen

(26.07)Dana Type

(26.07.05)Dana Group

26.07.05.01 Tertschite Ca4B10O19•20(H2O) Unk Mono

Strunz Class:

06.EB.20 06 - BORATES

06.E - Pentaborates

06.EB -Ino-pentaborates

06.EB.20 Tertschite Ca4B10O19•20(H2O) Unk Mono

Other Tertschite Information

References:

NAME( Dana8) PHYS. PROP.(Dana8) OPTIC PROP.(Enc. of Minerals,2nd ed.,1990)

See Also:

Links to other databases for Tertschite :
1 - Am. Min. Crystal Structure Database
2 - Athena
3 - EUROmin Project
4 - Ecole des Mines de Paris
5 - Google Images
6 - Google Scholar
7 - Handbook of Mineralogy (MinSocAm)
8 - Handbook of Mineralogy (UofA)
9 - MinDAT
10 - MinMax(Deutsch)
11 - MinMax(English)
12 - Mineralienatlas (Deutsch)
13 - QUT Mineral Atlas
14 - Ruff.Info

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Print or Cut-and-Paste your Tertschite Specimen Label here :

Tertschite

Ca4B10O19•20(H2O)
Dana No: 26.07.05.01 Strunz No: 06.EB.20
Locality:

Notes: