Tertschite Mineral Data

Tertschite Mineral Data +

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.

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, 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 = 0.02362
Boson Index = 0.97638

Photoelectric:

PE_Tertschite= 2.30 barns/electron
U=PE_Tertschite x r_electron= . barns/cc.

Radioactivity:

GRapi = 0 (Gamma Ray American Petroleum Institute Units)

Tertschite is Not Radioactive

Tertschite Classification

Dana Class:

26.7.5.1 (26)Hydrated Borates Containing Hydroxyl or Halogen

(26.7)Dana Type

(26.7.5)Dana Group

26.7.5.1 Tertschite Ca4B10O19·20(H2O) Unk Mono

Strunz Class:

V/H.16-20 V - Nitrates, Carbonates and Borates

V/H - Group borates. Planary and tetrahedral groups [B3O5]1- to [B6O10]2-

V/H.16 - Priceite - Tertschite series

V/H.16-10 Priceite Ca2B5O7(OH)5·H2O P 2₁/c 2/m

V/H.16-20 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 -Google Images 5 -Google Scholar 6 -Handbook of Mineralogy (UofA) 7 -MinDAT 8 -MinMax(Deutsch) 9 -MinMax(English) 10 -Mineralienatlas (Deutsch) 11 -QUT Mineral Atlas 12 -École des Mines de Paris

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

Tertschite

Ca4B10O19·20(H2O)
Dana No: 26.7.5.1 Strunz No: V/H.16-20
Locality:

Notes: