Teruggite Mineral Data (original) (raw)

General Teruggite Information

Help on Chemical Formula: Chemical Formula:

Ca4MgAs2B12O22(OH)12•12(H2O)

Help on Composition: Composition:

Molecular Weight = 1,236.44 gm

Calcium 12.97 % Ca 18.14 % CaO

Magnesium 1.97 % Mg 3.26 % MgO

Boron 10.49 % B 33.78 % B2O3

Arsenic 12.12 % As 16.00 % As2O3

Hydrogen 2.93 % H 26.23 % H2O

Oxygen 59.52 % O

______ ______

100.00 % 97.41 % = TOTAL OXIDE

Help on Empirical Formula: Empirical Formula:

Ca4MgAs2B12O22(OH)12•12(H2O)

Help on Environment: Environment:

Lacustrine borate deposits, typically associated with volcanic hot springs and diagensis of playa sediments.

Help on IMA Status: IMA Status:

Approved IMA 1968

Help on Locality: Locality:

Loma Blanca borate deposit, eight km southwest of Coranzuli, Jujuy Province, Argentina. Link to MinDat.org Location Data.

Help on Name Origin: Name Origin:

Named for Mario E. Teruggi, Professor of Sedimentology and Petrology, National University, Plata, Argentina.

Help on Name Pronunciation: Name Pronunciation:

Teruggite + Pronunciation Say TERUGGITE

Help on Synonym: Synonym:

ICSD 10265

PDF 21-150

Teruggite Image

Click Here for Larger Teruggite Image in a New Browser Window Images:

Teruggite Crystallography

Help on Axial Ratios: Axial Ratios:

a:b:c =0.7879:1:0.314

Help on Cell Dimensions: Cell Dimensions:

a = 15.68, b = 19.9, c = 6.25, Z = 2; beta = 100.083° V = 1,920.08 Den(Calc)= 2.14

Help on Crystal System: Crystal System:

Monoclinic - PrismaticH-M Symbol (2/m) Space Group: P 21/a

Help on X Ray Diffraction: X Ray Diffraction:

By Intensity(I/Io): 12.13(1), 2.785(0.3), 9.98(0.22),

Click Here for Large Teruggite Structure Window Crystal Structure:

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drag1 - LMB Manipulate Structure
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Help on Above

| | Dal Negro A , Kumbasar I , Ungaretti L , American Mineralogist , 58 (1973) p.1034-1043, The crystal structure of teruggite | | ----------------------------------------------------------------------------------------------------------------------------- |

Physical Properties of Teruggite

Help on Color: Color:

Colorless.

Help on Density: Density:

2.149

Help on Diaphaneity: Diaphaneity:

Transparent

Help on Hardness: Hardness:

2.5 - Finger Nail

Help on Luster: Luster:

Vitreous (Glassy)

Help on Streak: Streak:

white

Optical Properties of Teruggite

Help on Gladstone-Dale: Gladstone-Dale:

CI meas= -0.02 (Excellent) - where the CI = (1-KPDmeas/KC)
CI calc= -0.024 (Excellent) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.25,KPDmeas= 0.249,KC= 0.244
Ncalc = 1.52

Help on Optical Data: Optical Data:

Biaxial (+), a=1.526, b=1.528, g=1.551, bire=0.0250, 2V(Calc)=34, 2V(Meas)=33.

Calculated Properties of Teruggite

Help on Electron Density: Electron Density:

Bulk Density (Electron Density)=2.16 gm/cc
note: Specific Gravity of Teruggite =2.15 gm/cc.

Help on Fermion Index: Fermion Index:

Fermion Index = 0.02
Boson Index = 0.98

Help on Photoelectric: Photoelectric:

PETeruggite = 9.63 barns/electron
U=PETeruggite x rElectron Density= 20.82 barns/cc.

Help on Radioactivity: Radioactivity:

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

Teruggite Classification

Help on Dana Class: Dana Class:

27.01.06.01 (27)Compound Borates

(27.01)Dana Type

(27.01.06)Dana Group

27.01.06.01 Teruggite Ca4MgAs2B12O22(OH)12•12(H2O) P 21/a 2/m

Help on Strunz Class: Strunz Class:

06.FA.25 06 - BORATES

06.F - Hexaborates

06.FA -Neso-hexaborates

06.FA.25 Teruggite Ca4MgAs2B12O22(OH)12•12(H2O) P 21/a 2/m

Other Teruggite Information

Help on References: References:

NAME( AntBidBlaNic5) PHYS. PROP.(Enc. of Minerals,2nd ed.,1990) OPTIC PROP.(Enc. of Minerals,2nd ed.,1990)

Help on See Also: See Also:

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

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Ask about Teruggite here :
Ask-A-Mineralogist from the Mineralogical Society of America
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Print or Cut-and-Paste your Teruggite Specimen Label here :

Teruggite

Ca4MgAs2B12O22(OH)12•12(H2O)
Dana No: 27.01.06.01 Strunz No: 06.FA.25
Locality:

Notes: