[Mineral Galleries] [About Me] [e-Bay Items] [Latest News] [How to Order] A Diverse Selection of Beautifully Unique Gem & Mineral Specimens Desert Winds Gems & Minerals • For All Levels of Collectors Worldwide Aesthetic & Rare Mineral Specimens • Regular Updates General Veatchite-A InformationSr2B11O16(OH)5•(H2O) |
Molecular Weight = 653.19 gm |
|
Strontium 26.83 % Sr 31.73 % SrO |
|
Boron 18.20 % B 58.62 % B2O3 |
|
Hydrogen 1.08 % H 9.65 % H2O |
|
Oxygen 53.89 % O |
|
______ ______ |
|
100.00 % 100.00 % = TOTAL OXIDE |
Sr2B11O16(OH)5•(H2O) |
Approved IMA 1979 |
Emet borate depoosit, Kutahya, Turkey. Link to MinDat.org Location Data. |
Named as a dimorph of veatchite. |
Veatchite-A + Pronunciation |
| | Search for Veatchite-A Images
|
|
| | Veatchite-A Crystallographya:b:c =1.7747:1:0.5656 |
a = 20.8, b = 11.72, c = 6.63, Z = 4; alpha = 90°, beta = 90.8°, gamma = 91.95° V = 1,615.14 Den(Calc)= 2.69 |
TriclinicSpace Group: A1,A1 |
By Intensity(I/Io): 10.4(1), 3.32(0.7), 2.59(0.5), |
| Physical Properties of Veatchite-A{100} Perfect, {011} Good, {011} Good |
Colorless. |
2.73 |
Transparent |
Euhedral Crystals - Occurs as well-formed crystals showing good external form. |
Nodular - Tuberose forms having irregular protuberances over the surface. |
2 - Gypsum |
Vitreous - Pearly |
white |
| Optical Properties of Veatchite-ACI meas= -0.026 (Excellent) - where the CI = (1-KPDmeas/KC) |
CI calc= -0.041 (Good) - where the CI = (1-KPDcalc/KC) KPDcalc= 0.2133,KPDmeas= 0.2101,KC= 0.2049 Ncalc = 1.55 - 1.56 Biaxial (+), a=1.549, b=1.551, g=1.621, bire=0.0720, 2V(Calc)=20, 2V(Meas)=25. Dispersion r < v strong. |
| Calculated Properties of Veatchite-ABulk Density (Electron Density)=2.62 gm/cc |
note: Specific Gravity of Veatchite-A =2.73 gm/cc. Fermion Index = 0.05 |
Boson Index = 0.95 PEVeatchite-A = 29.71 barns/electron |
U=PEVeatchite-A x rElectron Density= 77.98 barns/cc. GRapi = 0 (Gamma Ray American Petroleum Institute Units) |
Veatchite-A is Not Radioactive | Veatchite-A Classification26.05.10.01 (26)Hydrated Borates Containing Hydroxyl or Halogen |
|
(26.05)Dana Type |
|
(26.05.10)Dana Group |
|
|
06.EC.15 06 - BORATES |
|
06.E - Pentaborates |
|
06.EC -Phyllo-pentaborates |
|
|
|
| Other Veatchite-A InformationNAME( Dana8) PHYS. PROP.(Dana8) OPTIC PROP.(Dana8) |
Links to other databases for Veatchite-A : |
1 - Am. Min. Crystal Structure Database 2 - Athena 3 - EUROmin Project 4 - Ecole des Mines de Paris 5 - Google Images 6 - Google Scholar 7 - MinDAT 8 - MinMax(Deutsch) 9 - MinMax(English) 10 - Mineralienatlas (Deutsch) 11 - QUT Mineral Atlas 12 - Ruff.Info Search for Veatchite-A using: Visit our Advertisers for Veatchite-A : AA Mineral SpecimensB & L Fine Minerals Crystalarium.com Dan Weinrich Fine Minerals Dan Weinrich Auctions Dakota Matrix Desert Winds Gems and Minerals Excalibur Minerals Exceptional Minerals Fabre Minerals Heliodor John Betts Fine Minerals Mason's Minerals Mineral News Mineral of the Month Club Wrights Rock Shop Translate Veatchite-A Mineral Data : Ask about Veatchite-A here : Print or Cut-and-Paste your Veatchite-A Specimen Label here :
| |
|
| | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||