Teruggite Mineral Data

Teruggite Mineral Data
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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:
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Teruggite

Comments: Opaque rounded teruggite aggregate.
Location: Loma Blanca, Jujuy, Argentina. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

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
drag2 - RMB Resize/Rotate
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H - Help Screen
I - Data Info
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B - Bonds On/Off
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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
Mindat.org's Discussion Groups
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Rockhounds Discussion Group on Yahoo Groups
Mineral Discussion Forum from Fabre Minerals - also available in Espaņol

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: