Flinkite Mineral Data

Flinkite Mineral Data
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General Flinkite Information

Help on Chemical Formula: Chemical Formula: Mn++2Mn+++(AsO4)(OH)4
Help on Composition: Composition: Molecular Weight = 371.76 gm
   Manganese  44.33 %  Mn   38.16 % MnO / 21.23 % Mn2O3
   Arsenic    20.15 %  As   30.91 % As2O5
   Hydrogen    1.08 %  H     9.69 % H2O
   Oxygen     34.43 %  O
             ______        ______ 
             100.00 %      100.00 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: Mn2+2Mn3+(AsO4)(OH)4
Help on Environment: Environment: Veinlets in magnetite ore.
Help on IMA Status: IMA Status: Valid Species (Pre-IMA) 1889
Help on Locality: Locality: Harstigen mine, near Persberg, and at Langban, Varmland, Sweden. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named for Gustav Flink (1849-1931), Swedish mineralogist and collector.
Help on Name Pronunciation: Name Pronunciation: Flinkite Say FLINKITE
Help on Synonym: Synonym: ICSD 16902
  PDF 12-400
 

Flinkite Image

Click Here for Larger Flinkite Image in a New Browser Window Images:
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Flinkite   Jarosewichite

Comments: Radial divergent spray of thick prismatic jarosewichite crystals with bladed flinkite crystals. (AmMin, v67:1043).
Location: Franklin mine, Franklin, SussexC ounty, New Jersey, USA. Scale: Scale Bar 100 µm.
© American Mineralogist

Flinkite Crystallography
Help on X Ray Diffraction: X Ray Diffraction: By Intensity(I/Io): 2.662(1), 4.386(1), 4.733(1),
Click Here for Large Flinkite Structure Window Crystal Structure:

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Moore P B , American Mineralogist , 52 (1967) p.1603-1613, Crystal chemistry of the basic manganese arsenate minerals 1. The crystal, structures of flinkite, Mn2Mn(OH)4(AsO4) and retzian, Mn2Y(OH)4(AsO4)

View Additional jPOWD Structure files for Flinkite
[1]
 

Physical Properties of Flinkite

Help on Color: Color: Green, Greenish brown, Dark greenish brown.
 

Optical Properties of Flinkite

Help on Gladstone-Dale: Gladstone-Dale: CI meas= 0.04 (Good) - where the CI = (1-KPDmeas/KC)
CI calc= 0.017 (Superior) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.2184,KPDmeas= 0.2132,KC= 0.2221
Ncalc = 1.82 - 1.84
 

Calculated Properties of Flinkite

Help on Electron Density: Electron Density: Bulk Density (Electron Density)=3.49 gm/cc
note: Specific Gravity of Flinkite =3.69 gm/cc.
Help on Fermion Index: Fermion Index: Fermion Index = 0.0001668873
Boson Index = 0.9998331127
Help on Photoelectric: Photoelectric: PEFlinkite = 25.37 barns/electron
U=PEFlinkite x rElectron Density= 88.65 barns/cc.
Help on Radioactivity: Radioactivity: GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Flinkite is Not Radioactive
 

Flinkite Classification
Help on Dana Class: Dana Class: 41.03.03.01 (41)Anhydrous Phosphates, etc. Containing Hydroxyl or Halogen
  (41.03)where (A B)3 (XO4) Zq
  (41.03.03)Dana Group
 
41.03.03.01 Flinkite Mn2Mn(AsO4)(OH)4 P nma 2/m 2/m 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 Flinkite Information
Help on See Also: See Also: Links to other databases for Flinkite :
1 - Am. Min. Crystal Structure Database
2 - Athena
3 - EUROmin Project
4 - Ecole des Mines de Paris
5 - Franklin Minerals(Dunn)
6 - GeoScienceWorld
7 - Google Images
8 - Google Scholar
9 - Handbook of Mineralogy (MinSocAm)
10 - Handbook of Mineralogy (UofA)
11 - MinDAT
12 - Mineralienatlas (Deutsch)
13 - Online Mineral Museum
14 - QUT Mineral Atlas
15 - Ruff.Info
16 - WWW-MINCRYST

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Ask about Flinkite here :
Ask-A-Mineralogist from the Mineralogical Society of America
Mindat.org's Discussion Groups
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Rockhounds Discussion Group on Yahoo Groups
Mineral Discussion Forum from Fabre Minerals - also available in Espaņol

Print or Cut-and-Paste your Flinkite Specimen Label here :

Flinkite

Mn++2Mn+++(AsO4)(OH)4
Dana No: 41.03.03.01 Strunz No: 08.BE.30
Locality:

 

Notes: