IMA2004-009 Mineral Data

IMA2004-009 Mineral Data

General IMA2004-009 Information

Chemical Formula:

Mg2(PO4)(OH)

Composition:

Molecular Weight = 160.59 gm

Magnesium 30.27 % Mg 50.20 % MgO

Phosphorus 19.29 % P 44.20 % P₂O₅

Hydrogen 0.63 % H 5.61 % H₂O

Oxygen 49.81 % O

______ ______

100.00 % 100.00 % = TOTAL OXIDE

Empirical Formula:

Mg₂(PO₄)(OH)

Environment:

Triplite-triploidite group

IMA Status:

Proposed IMA 2004 (Dana # Added)

Locality:

Dora-Maira massif, Vallone di Gilba, Val Varaita, Piemonte, Italy Link to MinDat.org Location Data.

Name Origin:

Commission on New Minerals and Mineral Names (CNMMN)

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IMA2004-009 Crystallography

Axial Ratios:

a:b:c =0.7576:1:0.9409

Cell Dimensions:

a = 9.646, b = 12.7314, c = 11.98, Z = 16; beta = 108.38° V = 1,396.18 Den(Calc)= 3.06

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): 2.984(1), 2.851(0.8), 3.117(0.66),3.292(0.5), 2.752(0.28), 2.71(0.19), 2.484(0.14),

Optical Properties of IMA2004-009

Optical Data:

NCalc= 1.61 - from Gladstone-Dale relationship (KC = 0.2003) where Ncalc=Dcalc*KC+1

Calculated Properties of IMA2004-009

Electron Density:

r_electron=3.05 gm/cc
note: r_IMA2004-009=3.06 gm/cc.

Fermion Index

Fermion Index = 0.0305
Boson Index = 0.9695

Photoelectric:

PE_IMA2004-009= 1.60 barns/electron
U=PE_IMA2004-009 x r_electron= 4.88 barns/cc.

Radioactivity:

GRapi = 0 (Gamma Ray American Petroleum Institute Units)

IMA2004-009 is Not Radioactive

IMA2004-009 Classification

Dana Class:

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

(41.6)where (A)2 (XO4) Zq

(41.6.3)Dana Group

41.6.3.1 Wolfeite (Fe,Mn)2(PO4)(OH) P 2₁/a 2/m

41.6.3.2 Triploidite (Mn,Fe)2(PO4)(OH) P 2₁/a 2/m

41.6.3.3 Sarkinite Mn2(AsO4)(OH) P 2₁/a 2/m

41.6.3.4 Stanekite! Fe(Mn,Fe,Mg)(PO4)O P 2₁/a 2/m

41.6.3.5 IMA2004-009 ! Mg2(PO4)(OH) 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 - Triplite-triploidite group

Other IMA2004-009 Information

See Also:

Links to other databases for IMA2004-009 :
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 IMA2004-009 Specimen Label here :

IMA2004-009

Mg2(PO4)(OH)
Dana No: 41.6.3.5 Strunz No: VII/X.00-00
Locality:

Notes: