IMA2004-035 Mineral Data

IMA2004-035 Mineral Data

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General IMA2004-035 Information

Chemical Formula:

Mn7(PO4)2(OH)8

Composition:

Molecular Weight = 710.57 gm

Manganese 54.12 % Mn 69.88 % MnO

Phosphorus 8.72 % P 19.98 % P₂O₅

Hydrogen 1.13 % H 10.14 % H₂O

Oxygen 36.03 % O

______ ______

100.00 % 100.00 % = TOTAL OXIDE

Empirical Formula:

Mn²⁺₇(PO₄)₂(OH)₈

IMA Status:

Proposed IMA 2004 (Dana # Added)

Locality:

Iron Monarch quarry, Iron Knob, South Australia Link to MinDat.org Location Data.

Name Origin:

Commission on New Minerals and Mineral Names (CNMMN)

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IMA2004-035 Crystallography

Axial Ratios:

a:b:c =2.0402:1:1.877

Cell Dimensions:

a = 11.364, b = 5.57, c = 10.455, Z = 2; beta = 96.61° V = 657.38 Den(Calc)= 3.59

Crystal System:

Monoclinic - PrismaticH-M Symbol (2/m) Space Group: P 2₁/c

$Help on X Ray Diffraction:$ X Ray Diffraction:

By Intensity(I/I_o): 3.621(1), 4.436(0.7), 3.069(0.5),2.941(0.4), 2.78(0.35), 2.718(0.2), 2.842(0.2), 2.89(0.2),

Optical Properties of IMA2004-035

Optical Data:

NCalc= 1.75 - from Gladstone-Dale relationship (KC = 0.2087) where Ncalc=Dcalc*KC+1

Calculated Properties of IMA2004-035

Electron Density:

r_electron=3.43 gm/cc
note: r_IMA2004-035=3.57 gm/cc.

Fermion Index

Fermion Index = 0.00017
Boson Index = 0.99983

Photoelectric:

PE_IMA2004-035= 14.37 barns/electron
U=PE_IMA2004-035 x r_electron= 49.25 barns/cc.

Radioactivity:

GRapi = 0 (Gamma Ray American Petroleum Institute Units)

IMA2004-035 is Not Radioactive

IMA2004-035 Classification

Dana Class:

41.2.1.3 (41)Anhydrous Phosphates, etc. Containing Hydroxyl or Halogen

(41.2)where (A B)7 (XO4)2 Zq

(41.2.1)Dana Group

41.2.1.1 Allactite Mn7(AsO4)2(OH)8 P 2₁/a 2/m

41.2.1.2 Raadeite! Mg7(PO4)2(OH)8 P 2₁/n 2/m

41.2.1.3 IMA2004-035 ! Mn7(PO4)2(OH)8 P 2₁/c 2/m

Strunz Class:

VII/X.00-00 VII - Phosphates, Arsenates and Vanadates

VII/X - Unclassified Strunz Phosphates, Arsenates and Vanadates

VII/X.00 - Phosphate, Basic

Other IMA2004-035 Information

See Also:

Links to other databases for IMA2004-035 :
1 -Am. Min. Crystal Structure Database 2 -Athena 3 -Google Images 4 -Google Scholar 5 -MinDAT 6 -MinMax(Deutsch) 7 -MinMax(English) 8 -Mineralienatlas (Deutsch)

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Print or Cut-and-Paste your IMA2004-035 Specimen Label here :

IMA2004-035

Mn7(PO4)2(OH)8
Dana No: 41.2.1.3 Strunz No: VII/X.00-00
Locality:

Notes: