Mineralogy Database

Raadeite Mineral Data

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General Raadeite Information

Help on Chemical  Formula: Chemical Formula: Mg7(PO4)2(OH)8
Help on Composition: Composition: Molecular Weight = 493.69 gm
   Magnesium   33.38 %  Mg   55.35 % MgO
   Manganese    0.22 %  Mn    0.29 % MnO
   Iron         0.23 %  Fe    0.29 % FeO
   Arsenic      0.30 %  As    0.47 % As2O5
   Phosphorus  12.30 %  P    28.18 % P2O5
   Hydrogen     1.72 %  H    15.36 % H2O
   Oxygen      51.85 %  O
              ______        ______ 
              100.00 %       99.94 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: Mg6.78Fe2+0.02Mn2+0.02P1.96As0.02H8.42O16
Help on Environment: Environment: Low pressure and temperature metamorphic mineral in apatite-rich nodules in sepentine. The magnesium and phosphate dominant analog of allactite.
Help on IMA Status: IMA Status: Approved IMA 2001 (Dana # Added)
Help on Locality: Locality: Serpentinite body near Tingelstadtjern in the Modum district of southern Norway. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named for Gunnar Raade (1944-), minerals curator at the Natural History Museum, Oslo, Norway.
Help on Synonym: Synonym: IMA1996-034

Raadeite Image

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  Heneuite   Raadeite

Comments: Translucent aqua colored greasy heneuite grain, surrounded by beige rim of raadeite, with dark blue phosphoellenbergerite inclusion (near top of heneuite), in quartz apatite rock.
Location: Tingelstadt Iron Mine, Modum, Buskerud, Norway. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

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Comments: Black and white image of a petrographic thin section showing two crystals of raadeite (arrows) included in holtedahlite. (Eur. J. Mineral, 13:320).
Location: Nodules of apatite + Mg-phosphates within the Tingelstadtjern serpentinite body, Modum district, Norway. Scale: See Image.
© Eur. J. Mineral

Raadeite Crystallography

Help on X Ray Diffraction: X Ray Diffraction: By Intensity(I/Io): 2.905(1)(131), 3.521(0.8)(122,121), 2.199(0.8)(142,202),2.794(0.75)(023,041), 4.436(0.75)(111), 3.087(0.7)(013), 3.145(0.7)(122),

Physical Properties of Raadeite

Help on Color: Color: Colorless.

Optical Properties of Raadeite

Help on Gladstone-Dale: Gladstone-Dale: CI calc= 0 (Superior) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.2163,KC= 0.2164
Ncalc = 1.6

Calculated Properties of Raadeite

Help on Electron Density: Electron Density: Bulk Density (Electron Density)=2.81 gm/cc
note: Specific Gravity of Raadeite =2.79 gm/cc.
Help on Fermion Index: Fermion Index: Fermion Index = 0.03
Boson Index = 0.97
Help on Photoelectric: Photoelectric: PERaadeite = 1.68 barns/electron
U=PERaadeite x rElectron Density= 4.71 barns/cc.
Help on Radioactivity: Radioactivity: GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Raadeite is Not Radioactive

Raadeite Classification

Help on  Dana Class: Dana Class: (41)Anhydrous Phosphates, etc. Containing Hydroxyl or Halogen
  (41.02)where (A B)7 (XO4)2 Zq
  (41.02.01)Allactite Group Allactite Mn7(AsO4)2(OH)8 P 21/a 2/m Raadeite! Mg7(PO4)2(OH)8 P 21/n 2/m Waterhouseite! Mn7(PO4)2(OH)8 P 21/c 2/m
Help on  Strunz Class: Strunz Class: 08.BE.30 08 - PHOSPHATES, ARSENATES, VANADATES
  08.B - Phosphates, etc. with Additional Anions, without H2O
  08.BE -With only medium-sized cations, (OH, etc.):RO4 > 2:1
08.BE.30 Allactite Mn7(AsO4)2(OH)8 P 21/a 2/m
08.BE.30 Flinkite Mn2Mn(AsO4)(OH)4 P nma 2/m 2/m 2/m
08.BE.30 Raadeite! Mg7(PO4)2(OH)8 P 21/n 2/m

Other Raadeite Information

Help on See Also: See Also: Links to other databases for Raadeite :
1 - Am. Min. Crystal Structure Database
2 - Athena
3 - GeoScienceWorld
4 - Google Images
5 - Google Scholar
6 - Handbook of Mineralogy (MinSocAm)
7 - Handbook of Mineralogy (UofA)
8 - MinDAT
9 - Mineralienatlas (Deutsch)
10 - Online Mineral Museum
11 - QUT Mineral Atlas
12 - Ruff.Info

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Dana No: Strunz No: 08.BE.30





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