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Spheniscidite Mineral Data + |
General Spheniscidite Information |
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| (NH4,K)(Fe+++,Al)2(PO4)2(OH)·2(H2O) | |||
| Molecular Weight = 413.28 gm | |||
| Potassium 3.78 % K 4.56 % K2O | |||
| Aluminum 5.22 % Al 9.87 % Al2O3 | |||
| Iron 22.97 % Fe 32.84 % Fe2O3 | |||
| Phosphorus 14.99 % P 34.35 % P2O5 | |||
| Hydrogen 0.59 % H - % Calc as (NH4)2O | |||
| Hydrogen 1.63 % H 14.60 % H2O | |||
| Nitrogen 2.03 % N 3.78 % (NH4)2O | |||
| Oxygen 48.78 % O | |||
| ______ ______ | |||
| 100.00 % 100.00 % = TOTAL OXIDE | |||
| (NH4)0.6K0.4Fe3+1.7Al0.8(PO4)2(OH)2.5·2.1(H2O) | |||
| Formed by interaction of phosphate solutions derived from quano with micacous and chloritic minerals in soil under a penguin rookery. | |||
| Approved IMA 1986 | |||
| On Elephant Island, South Shetland Islands, about 800 km southeast of Cape Horn, British Antarctic Territory, Antartica. Link to MinDat.org Location Data. | |||
| Named for "Sphenisciformes," the Latin order name or penguins. | |||
| ICSD 75229 | |||
| PDF 41-593 | |||
Search for Spheniscidite Images | |||
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Spheniscidite Crystallography |
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| a:b:c =1.0124:1:1.0072 | |||
| a = 9.75, b = 9.63, c = 9.7, Z = 4; beta = 102.567° V = 888.94 Den(Calc)= 3.09 | |||
| Monoclinic - PrismaticH-M Symbol (2/m) Space Group: P 21/n | |||
| By Intensity(I/Io): 6.79(1), 5.99(0.9), 3.05(0.45), | |||
Physical Properties of Spheniscidite |
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| Brown. | |||
| 2.71 | |||
| Transparent to Translucent | |||
| Selvage - As a reaction rim, surrounding the host mineral. | |||
| 1-1.5 - Talc or a little harder | |||
| Earthy (Dull) | |||
| white | |||
Optical Properties of Spheniscidite |
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| CI meas= -0.053 (Good) - where the CI = (1-KPDmeas/KC) CI calc= 0.077 (Fair) - where the CI = (1-KPDcalc/KC) KPDcalc= 0.2265,KPDmeas= 0.2583,KC= 0.2453 |
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| Biaxial (?), b=1.7 | |||
Calculated Properties of Spheniscidite |
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relectron=2.71 gm/cc |
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| Fermion Index = 0.02537 Boson Index = 0.97463 |
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PESpheniscidite = 7.99 barns/electron |
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| GRapi = 54.53 (Gamma Ray American Petroleum Institute Units) Estimated Radioactivity from Spheniscidite |
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Spheniscidite Classification |
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| 42.11.6.3 (42)Hydrated Phosphates, etc., Containing Hydroxyl or Halogen | |||
| (42.11)where (AB)4 (XO4)3 Zq · x(H2O) | |||
| (42.11.6)Dana Group | |||
| VII/D.27-20 VII - Phosphates, Arsenates and Vanadates | |||
| VII/D - Water-bearing phosphates with unfamiliar anions, cations of very big and medium size: Al, Mg and Ca, Na, K | |||
| VII/D.27 - Tinsleyite - Minyulite series | |||
Other Spheniscidite Information |
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| NAME( AntBidBlaNic4) PHYS. PROP.(Enc. of Minerals,2nd ed.,1990) OPTIC PROP.(Enc. of Minerals,2nd ed.,1990) | |||
| Links to other databases for Spheniscidite : 1 -Am. Min. Crystal Structure Database 2 -Athena 3 - Crocoite.com Mineral Locations 4 - EUROmin Project 5 -Google Images 6 -Google Scholar 7 -Handbook of Mineralogy (UofA) 8 -MinDAT 9 -MinMax(Deutsch) 10 -MinMax(English) 11 -Mineralienatlas (Deutsch) 12 -QUT Mineral Atlas 13 - WWW-MINCRYST 14 -École des Mines de Paris Search for Spheniscidite using: Visit our Advertisers for Spheniscidite : AA Mineral SpecimensB & L Fine Minerals Dan Weinrich Fine Minerals Dan Weinrich Auctions e-Rocks 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 Rockshop.cz T G Fine Minerals Wrights Rock Shop Translate Spheniscidite Mineral Data : Ask about Spheniscidite here : Print or Cut-and-Paste your Spheniscidite Specimen Label here :
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