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Pinnoite Mineral Data + |
General Pinnoite Information |
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| MgB2O4·3(H2O) | |||
| Molecular Weight = 163.97 gm | |||
| Magnesium 14.82 % Mg 24.58 % MgO | |||
| Boron 13.19 % B 42.46 % B2O3 | |||
| Hydrogen 3.69 % H 32.96 % H2O | |||
| Oxygen 68.30 % O | |||
| ______ ______ | |||
| 100.00 % 100.00 % = TOTAL OXIDE | |||
| MgB2O4·3(H2O) | |||
| Evaporite salt deposits. | |||
| Valid Species (Pre-IMA) 1884 | |||
| Stassfurt and Aschersleben, Saxony, Germany. Eagle Borax works, Death Valley, California, USA. Link to MinDat.org Location Data. | |||
| Named for chief councilor of Mines, Pinno, of Halle, Germany. | |||
| ICSD 20662 | |||
| PDF 25-119 | |||
Pinnoite Image | |||
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Pinnoite Crystallography |
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| a:c = 1:1.07522 | |||
| a = 7.617, c = 8.19, Z = 4; V = 475.17 Den(Calc)= 2.29 | |||
| Tetragonal - PyramidalH-M Symbol (4) Space Group: P 42 | |||
| By Intensity(I/Io): 5.39(1), 2.31(0.7), 2.05(0.5),3.16(0.4), 1.91(0.3), 2.25(0.3), 1.57(0.2), | |||
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Physical Properties of Pinnoite |
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| [???] Indistinct | |||
| Colorless, Yellow, Yellow green, Light yellow. | |||
| 2.29 | |||
| Translucent | |||
| Uneven - Flat surfaces (not cleavage) fractured in an uneven pattern. | |||
| Granular - Generally occurs as anhedral to subhedral crystals in matrix. | |||
| Nodular - Tuberose forms having irregular protuberances over the surface. | |||
| Radial - Crystals radiate from a center without producing stellar forms (e.g. stibnite) | |||
| 3.5 - Copper Penny | |||
| Vitreous (Glassy) | |||
| white | |||
Optical Properties of Pinnoite |
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| CI meas= 0.014 (Superior) - where the CI = (1-KPDmeas/KC) CI calc= 0.014 (Superior) - where the CI = (1-KPDcalc/KC) KPDcalc= 0.2489,KPDmeas= 0.2489,KC= 0.2525 |
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| Uniaxial (+), w=1.565, e=1.575, bire=0.0100. | |||
Calculated Properties of Pinnoite |
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relectron=2.35 gm/cc |
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| Fermion Index = 0.04139 Boson Index = 0.95861 |
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PEPinnoite = 0.58 barns/electron |
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| GRapi = 0 (Gamma Ray American Petroleum Institute Units) Pinnoite is Not Radioactive |
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Pinnoite Classification |
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| 25.2.3.1 (25)Anhydrous Borates Containing Hydroxyl or Halogen | |||
| (25.2)Dana Type | |||
| (25.2.3)Dana Group | |||
| V/H.04-10 V - Nitrates, Carbonates and Borates | |||
| V/H - Group borates. Planary groups [B2O5]4- to [B2O7]2- | |||
| V/H.04 - Pinnoite - Pentahydroborite series | |||
Other Pinnoite Information |
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| NAME( Dana8) PHYS. PROP.(Enc. of Minerals,2nd ed.,1990) OPTIC PROP.(Enc. of Minerals,2nd ed.,1990) | |||
| Links to other databases for Pinnoite : 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 15 - WWW-MINCRYST Search for Pinnoite using: Visit our Advertisers for Pinnoite : AA Mineral SpecimensB & L Fine Minerals Dan Weinrich Fine Minerals Dan Weinrich Auctions Excalibur Minerals Exceptional Minerals Fabre Minerals Greenside Minerals Heliodor John Betts Fine Minerals Mason's Minerals Mineral News Mineral of the Month Club MineralsWeb Fine Minerals The GeoZone Wrights Rock Shop Translate Pinnoite Mineral Data : Ask about Pinnoite here : Print or Cut-and-Paste your Pinnoite Specimen Label here :
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