Mitridatite Mineral Data
General Mitridatite Information
Chemical Formula:
Ca2Fe+++3(PO4)3O2•3(H2O)
Composition:
Molecular Weight = 634.66 gm
Calcium 12.63 % Ca 17.67 % CaO
Iron 26.40 % Fe 37.74 % Fe2 O3
Phosphorus 14.64 % P 33.55 % P2 O5
Hydrogen 0.95 % H 8.52 % H2 O
Oxygen 45.38 % O
______ ______
100.00 % 97.48 % = TOTAL OXIDE
Empirical Formula:
Ca2 Fe3+ 3 (PO4 )3 O3 •3(H2 O)
Environment:
Sedimentary oolitic iron ores.
IMA Status:
Valid Species (Pre-IMA) 1914
Locality:
Mithridat Hill, Kerch, Crimea, Russia. Link to MinDat.org Location Data.
Name Origin:
Named for the locality.
Name Pronunciation:
Mitridatite + Pronunciation
Synonym:
ICSD 1017
PDF 26-1057
Mitridatite Image
Images:
Mitridatite Crystallography
Axial Ratios:
a:b:c =0.9054:1:0.5813
Cell Dimensions:
a = 17.52, b = 19.35, c = 11.25, Z = 12; beta = 95.92° V = 3,793.55 Den(Calc)= 3.33
Crystal System:
Monoclinic - Prismatic H-M Symbol (2/m) Space Group: A2/a
X Ray Diffraction:
By Intensity(I/Io ): 8.64(1), 2.721(0.7), 5.55(0.6),
Physical Properties of Mitridatite
Cleavage:
{100} Good
Color:
Bronze red, Brown green, Green, Greenish yellow, Yellow brown.
Density:
3.24
Diaphaneity:
Translucent to Opaque
Fracture:
Brittle - Uneven - Very brittle fracture producing uneven fragments.
Habit:
Massive - Uniformly indistinguishable crystals forming large masses.
Habit:
Nodular - Tuberose forms having irregular protuberances over the surface.
Hardness:
3.5 - Copper Penny
Luster:
Adamantine - Resinous
Streak:
olive green
Optical Properties of Mitridatite
Gladstone-Dale:
CI meas = -0.038 (Excellent) - where the CI = (1-KPDmeas /KC ) CI calc = -0.01 (Superior) - where the CI = (1-KPDcalc /KC )
KPDcalc = 0.2487,KPDmeas = 0.2557,KC = 0.2463 Ncalc = 1.8 - 1.82
Optical Data:
Biaxial (-), a=1.785, b=1.85, g=1.85, bire=0.0650, 2V(Calc)=0, 2V(Meas)=5-10.
Calculated Properties of Mitridatite
Electron Density:
Bulk Density (Electron Density)=3.28 gm/cc note: Specific Gravity of Mitridatite =3.33 gm/cc.
Fermion Index:
Fermion Index = 0.0059862776 Boson Index = 0.9940137224
Photoelectric:
PEMitridatite = 10.10 barns/electronU=PEMitridatite x r Electron Density= 33.16 barns/cc.
Radioactivity:
GRapi = 0 (Gamma Ray American Petroleum Institute Units) Mitridatite is Not Radioactive
Mitridatite Classification
Dana Class:
42.08.04.01 (42) Hydrated Phosphates, etc., Containing Hydroxyl or Halogen
(42.08) where (AB)7 (XO4)4 Zq � x(H2O)
(42.08.04) Mitridatite Group
42.08.04.01 Mitridatite Ca2Fe3(PO4)3O2•3(H2O) A2/a 2/m
42.08.04.02 Robertsite Ca6Mn9(PO4)9O6(H2O)6•3(H2O) A2/a 2/m
42.08.04.03 Arseniosiderite Ca2Fe3(AsO4)3O2•3(H2O) A2/a 2/m
Strunz Class:
08.DH.30 08 - PHOSPHATES, ARSENATES, VANADATES
08.D - Phosphates, etc
08.DH -With large and medium-sized cations, (OH, etc.):RO4 < 1:1
08.DH.30 Arseniosiderite Ca2Fe3(AsO4)3O2•3(H2O) A2/a 2/m
08.DH.30 Pararobertsite Ca2Mn3(PO4)3O2•3(H2O) P 21 /c 2/m
08.DH.30 Kolfanite Ca2Fe3O2(AsO4)3•2(H2O) A2/a 2/m
08.DH.30 Lunokite (Mn,Ca)(Mg,Fe,Mn)Al(PO4)2(OH)•4(H2O) P bca 2/m 2/m 2/m
08.DH.30 Robertsite Ca6Mn9(PO4)9O6(H2O)6•3(H2O) A2/a 2/m
08.DH.30 Mitridatite Ca2Fe3(PO4)3O2•3(H2O) A2/a 2/m
08.DH.30 Sailaufite ! Ca2Mn3O2(AsO4)2(CO3)•3(H2O) Cm m
Other Mitridatite Information
References:
NAME( Dana8) PHYS. PROP.(Enc. of Minerals,2nd ed.,1990) OPTIC PROP.(Enc. of Minerals,2nd ed.,1990)
See Also:
Links to other databases for Mitridatite :
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
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Mitridatite
Ca2Fe+++3(PO4)3O2•3(H2O)
Dana No: 42.08.04.01 Strunz No: 08.DH.30
Locality:
Notes:
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