Flinkite Mineral Data

General Flinkite Information

Chemical Formula:

Mn++2Mn+++(AsO4)(OH)4

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

Empirical Formula:

Mn²⁺₂Mn³⁺(AsO₄)(OH)₄

Environment:

Veinlets in magnetite ore.

IMA Status:

Valid Species (Pre-IMA) 1889

Locality:

Harstigen mine, near Persberg, and at Langban, Varmland, Sweden. Link to MinDat.org Location Data.

Name Origin:

Named for Gustav Flink (1849-1931), Swedish mineralogist and collector.

Name Pronunciation:

Flinkite

Synonym:

ICSD 16902

PDF 12-400

Flinkite Image

Images:

Jarosewichite Flinkite

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/I_o): 2.662(1), 4.386(1), 4.733(1),

Physical Properties of Flinkite

Color:

Green, Greenish brown, Dark greenish brown.

Optical Properties of Flinkite

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

Electron Density:

Bulk Density (Electron Density)=3.49 gm/cc
note: Specific Gravity of Flinkite =3.69 gm/cc.

Fermion Index:

Fermion Index = 0.0001668873
Boson Index = 0.9998331127

Photoelectric:

PE_Flinkite= 25.37 barns/electron
U=PE_Flinkite x rElectron Density= 88.65 barns/cc.

Radioactivity:

GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Flinkite is Not Radioactive

Flinkite Classification

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

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

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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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: