[Minerals] [Gems] [Sale Items] [Gold Rings] [Big Stuff] [Main Page] Shop early for Holiday Season and get the best stuff. You can put it on layaway for up to six weeks! General Graftonite Information(Fe++,Mn,Ca)3(PO4)2 |
Molecular Weight = 351.93 gm |
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Calcium 3.42 % Ca 4.78 % CaO |
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Manganese 14.05 % Mn 18.14 % MnO |
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Iron 28.56 % Fe 36.75 % FeO |
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Phosphorus 17.60 % P 40.33 % P2O5 |
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Oxygen 36.37 % O |
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______ ______ |
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100.00 % 100.00 % = TOTAL OXIDE |
Fe2+1.8Mn2+0.9Ca0.3(PO4)2 |
Valid Species (Pre-IMA) 1900 |
Link to MinDat.org Location Data. |
Named after its locality at Grafton, New Hampshire, USA. |
Graftonite + Pronunciation |
ICSD 79905 |
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PDF 35-357 |
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Graftonite Crystallographya:b:c =0.7666:1:0.5332 |
a = 8.87, b = 11.57, c = 6.17, Z = 4; beta = 99.2° V = 625.06 Den(Calc)= 3.74 |
Monoclinic - PrismaticH-M Symbol (2/m) Space Group: P 21/c |
By Intensity(I/Io): 2.86(1), 3.5(0.9), 2.715(0.7), |
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Mouse
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| Physical Properties of Graftonite{010} Perfect |
Brown, Pink, Dark brown, Reddish brown. |
3.67 - 3.7, Average = 3.68 |
Translucent |
Uneven - Flat surfaces (not cleavage) fractured in an uneven pattern. |
Lamellar - Thin laminae producing a lamellar structure. |
Massive - Granular - Common texture observed in granite and other igneous rock. |
5 - Apatite |
Non-fluorescent. |
Vitreous - Greasy |
pale pink |
| Optical Properties of GraftoniteCI meas= -0.021 (Excellent) - where the CI = (1-KPDmeas/KC) |
CI calc= -0.006 (Superior) - where the CI = (1-KPDcalc/KC) KPDcalc= 0.1898,KPDmeas= 0.1926,KC= 0.1887 Ncalc = 1.69 - 1.71 Biaxial (+), a=1.7, b=1.705, g=1.724, bire=0.0240, 2V(Calc)=56, 2V(Meas)=30-60. Dispersion relatively weak. |
none. |
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| Calculated Properties of GraftoniteBulk Density (Electron Density)=3.60 gm/cc |
note: Specific Gravity of Graftonite =3.74 gm/cc. Fermion Index = 0.0062761334 |
Boson Index = 0.9937238666 PEGraftonite = 13.52 barns/electron |
U=PEGraftonite x rElectron Density= 48.63 barns/cc. GRapi = 0 (Gamma Ray American Petroleum Institute Units) |
Graftonite is Not Radioactive | Graftonite Classification38.03.03.01 (38)Anhydrous Phosphates, etc |
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(38.03)(A+ B++)3 (XO4)2 |
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(38.03.03)Dana Group |
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08.AB.20 08 - PHOSPHATES, ARSENATES, VANADATES |
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08.A - Phosphates, etc. without additional anions, without H2O |
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08.AB -With medium-sized cations |
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| Other Graftonite InformationNAME( Duda&Rejl90) PHYS. PROP.(Enc. of Minerals,2nd ed.,1990) OPTIC PROP.(Ford32) |
Links to other databases for Graftonite : |
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 Graftonite using: Visit our Advertisers for Graftonite : 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 Graftonite Mineral Data : Ask about Graftonite here : Print or Cut-and-Paste your Graftonite Specimen Label here :
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