Rimkorolgite Mineral Data

Rimkorolgite Mineral Data
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General Rimkorolgite Information

Help on Chemical Formula: Chemical Formula: Mg5Ba(PO4)4•8(H2O)
Help on Composition: Composition: 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
Help on Empirical Formula: Empirical Formula: Mg5Ba(PO4)4•8(H2O)
Help on Environment: Environment: In cavities in dolomitic carbonatites. Structure closely related to bakhchisaraitsevite.
Help on IMA Status: IMA Status: Approved IMA 1995 (Dana # Added)
Help on Locality: Locality: Kovdor iron deposit, Kola Peninsula, Russia. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: For Olga M. Rimskaya-Konsakova (1914-1987), Russian mineralogist from St. Petersbug University.
Help on Name Pronunciation: Name Pronunciation: Rimkorolgite + Pronunciation Say RIMKOROLGITE
Help on Synonym: Synonym: IMA1990-032
 

Rimkorolgite Image

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Rimkorolgite

Comments: Pinkish flesh-colored crystals of rimkorolgite in matrix.
Location: Kovdor Massif, Kola Peninsula, Russia. Scale: Specimen Size 25x17x8 mm.
© Sergey Vasiliev / Systematic Mineralogy

Rimkorolgite Crystallography
Help on Axial Ratios: Axial Ratios: a:b:c =0.6496:1:1.4273
Help on Cell Dimensions: Cell Dimensions: a = 8.3354, b = 12.8304, c = 18.313, Z = 4; beta = 90.2° V = 1,958.50 Den(Calc)= 2.65
Help on Crystal System: Crystal System: Monoclinic - PrismaticH-M Symbol (2/m) Space Group: P 21/c
Help on X Ray Diffraction: X Ray Diffraction: By Intensity(I/Io): 10.51(1), 3.081(0.78), 2.969(0.44),
Help on Forms: Forms:

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Forms: ( 0 1 0) ( 1 0 1) ( 0 0 1)

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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

Help on Cleavage: Cleavage: {001} Perfect
Help on Color: Color: Yellowish brown, Pink.
Help on Density: Density: 2.67
Help on Diaphaneity: Diaphaneity: Transparent to translucent
Help on Fracture: Fracture: Brittle - Generally displayed by glasses and most non-metallic minerals.
Help on Habit: Habit: Fibrous - Crystals made up of fibers.
Help on Habit: Habit: Prismatic - Crystals Shaped like Slender Prisms (e.g. tourmaline).
Help on Habit: Habit: Pseudo Hexagonal - Crystals show a hexagonal outline.
Help on Hardness: Hardness: 3 - Calcite
Help on Luminescence: Luminescence: Non-fluorescent.
Help on Luster: Luster: Vitreous - Silky
Help on Streak: Streak: white
 

Optical Properties of Rimkorolgite

Help on Gladstone-Dale: Gladstone-Dale: 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
Help on Optical Data: Optical Data: Biaxial (+), a=1.552, b=1.552, g=1.558, bire=0.0060, 2V(Calc)=0, 2V(Meas)=23.
Help on Pleochroism (x): Pleochroism (x): colorless.
Help on Pleochroism (y): Pleochroism (y): colorless.
Help on Pleochroism (z): Pleochroism (z): colorless.
 

Calculated Properties of Rimkorolgite

Help on Electron Density: Electron Density: Bulk Density (Electron Density)=2.62 gm/cc
note: Specific Gravity of Rimkorolgite =2.67 gm/cc.
Help on Fermion Index: Fermion Index: Fermion Index = 0.04
Boson Index = 0.96
Help on Photoelectric: Photoelectric: PERimkorolgite = 72.85 barns/electron
U=PERimkorolgite x rElectron Density= 190.82 barns/cc.
Help on Radioactivity: Radioactivity: GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Rimkorolgite is Not Radioactive
 

Rimkorolgite Classification
Help on Dana Class: Dana Class: 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
Help on Strunz Class: Strunz Class: 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
Help on References: References: NAME( MinRec) PHYS. PROP.(Am.Min., v 81, v 87, p 1735) OPTIC PROP.(MinRec)
Help on See Also: See Also: Links to other databases for Rimkorolgite :
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

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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: