Rimkorolgite Mineral Data (original) (raw)
General Rimkorolgite Information
Mg5Ba(PO4)4•8(H2O)
Molecular Weight = 782.86 gm
Barium 17.54 % Ba 19.59 % BaO
Magnesium 15.52 % Mg 25.74 % MgO
Phosphorus 15.83 % P 36.26 % P2O5
Hydrogen 2.06 % H 18.41 % H2O
Oxygen 49.05 % O
______ ______
100.00 % 100.00 % = TOTAL OXIDE
Mg5Ba(PO4)4•8(H2O)
In cavities in dolomitic carbonatites. Structure closely related to bakhchisaraitsevite.
Approved IMA 1995 (Dana # Added)
Kovdor iron deposit, Kola Peninsula, Russia. Link to MinDat.org Location Data.
For Olga M. Rimskaya-Konsakova (1914-1987), Russian mineralogist from St. Petersbug University.
IMA1990-032
Rimkorolgite Image
Rimkorolgite Crystallography
a:b:c =0.6496:1:1.4273
a = 8.3354, b = 12.8304, c = 18.313, Z = 4; beta = 90.2° V = 1,958.50 Den(Calc)= 2.65
Monoclinic - PrismaticH-M Symbol (2/m) Space Group: P 21/c
By Intensity(I/Io): 10.51(1), 3.081(0.78), 2.969(0.44),
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| | Forms:( 0 1 0) ( 1 0 1) ( 0 0 1) Warning: this large pop-up is very compute intensive and may not work well with some computers. | | --------------------------------------------------------------------------------------------------------------------------------------------------- |
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| | Krivovichev S V , Britvin S N , Burns P C , Yakovenchuk V N , European Journal of Mineralogy , 14 (2002) p.397-402, Crystal structure of rimkorolgite, Ba[Mg5(H2O)7(PO4)4](H2O), and its comparison, with bakhchisaraitsevite | | ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |
Physical Properties of Rimkorolgite
{001} Perfect
Yellowish brown, Pink.
2.67
Transparent to translucent
Brittle - Generally displayed by glasses and most non-metallic minerals.
Fibrous - Crystals made up of fibers.
Prismatic - Crystals Shaped like Slender Prisms (e.g. tourmaline).
Pseudo Hexagonal - Crystals show a hexagonal outline.
3 - Calcite
Non-fluorescent.
Vitreous - Silky
white
Optical Properties of Rimkorolgite
CI meas= -0.01 (Superior) - where the CI = (1-KPDmeas/KC)
CI calc= -0.017 (Superior) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.2091,KPDmeas= 0.2075,KC= 0.2055
Ncalc = 1.54 - 1.55
Biaxial (+), a=1.552, b=1.552, g=1.558, bire=0.0060, 2V(Calc)=0, 2V(Meas)=23.
colorless.
colorless.
colorless.
Calculated Properties of Rimkorolgite
Bulk Density (Electron Density)=2.62 gm/cc
note: Specific Gravity of Rimkorolgite =2.67 gm/cc.
Fermion Index = 0.04
Boson Index = 0.96
PERimkorolgite = 72.85 barns/electron
U=PERimkorolgite x rElectron Density= 190.82 barns/cc.
GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Rimkorolgite is Not Radioactive
Rimkorolgite Classification
40.05.15.01 (40)Hydrated Phosphates, etc
(40.05)with miscellaneous formulae
(40.05.15)Dana Group
40.05.15.01 Rimkorolgite! Mg5Ba(PO4)4•8(H2O) P 21/c 2/m
40.05.15.02 IMA2008-048! Zn6(PO4)4•7H2O P1 1
08.CH.45 08 - PHOSPHATES, ARSENATES, VANADATES
08.C - Phosphates without Additional Anions, with H2O
08.CH -With large and medium-sized cations, RO4:H2O < 1:1
08.CH.45 Rimkorolgite! Mg5Ba(PO4)4•8(H2O) P 21/c 2/m
Other Rimkorolgite Information
NAME( MinRec) PHYS. PROP.(Am.Min., v 81, v 87, p 1735) OPTIC PROP.(MinRec)
Links to other databases for Rimkorolgite :
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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Print or Cut-and-Paste your Rimkorolgite Specimen Label here :
Rimkorolgite
Mg5Ba(PO4)4•8(H2O)
Dana No: 40.05.15.01 Strunz No: 08.CH.45
Locality:
Notes: