Magnesiochlorophoenicite Mineral Data

General Magnesiochlorophoenicite Information

Chemical Formula:

(Mg,Mn)3Zn2(AsO4)(OH,O)6

Composition:

Molecular Weight = 465.62 gm

Magnesium 11.74 % Mg 19.48 % MgO

Manganese 8.85 % Mn 11.43 % MnO

Zinc 28.09 % Zn 34.96 % ZnO

Arsenic 16.09 % As 24.68 % As₂O₅

Hydrogen 0.87 % H 7.74 % H₂O

Oxygen 34.36 % O

______ ______

100.00 % 98.28 % = TOTAL OXIDE

Empirical Formula:

Mg_2.25Mn²⁺_0.75Zn₂(AsO₄)(OH)₄O₂

IMA Status:

Valid Species (Pre-IMA) 1935

Locality:

Link to MinDat.org Location Data.

Name Origin:

Named as the Mg analog of chlorophoenicite.

Synonym:

Magnesium-chlorophoenicite - Renamed as Magnesiochlorophoenicite by Mineralogical Record, v330 (2008), p131

Magnesiochlorophoenicite Crystallography

Axial Ratios:

a:b:c =6.9694:1:2.224

Cell Dimensions:

a = 23.02, b = 3.303, c = 7.346, Z = 2; beta = 106.22° V = 536.32 Den(Calc)= 2.88

Crystal System:

Monoclinic - Prismatic H-M Symbol (2/m) Space Group: C 2/m

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

By Intensity(I/I_o): 3.123(1), 3.723(1), 2.641(0.8),

Physical Properties of Magnesiochlorophoenicite

Color:

Colorless, White.

Density:

3.37

Diaphaneity:

Transparent to Translucent

Hardness:

3-3.5 - Calcite-Copper Penny

Luster:

Vitreous - Pearly

Optical Properties of Magnesiochlorophoenicite

Gladstone-Dale:

CI meas= -0.091 (Poor) - where the CI = (1-KPDmeas/KC)
CI calc= -0.276 (Poor) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.2336,KPDmeas= 0.1996,KC= 0.183
Ncalc = 1.53 - 1.62

Optical Data:

Biaxial (+), a=1.669, b=1.672, g=1.677, bire=0.0080

Calculated Properties of Magnesiochlorophoenicite

Electron Density:

Bulk Density (Electron Density)=3.22 gm/cc
note: Specific Gravity of Magnesiochlorophoenicite =3.37 gm/cc.

Fermion Index:

Fermion Index = 0.02
Boson Index = 0.98

Photoelectric:

PE_{Magnesiochlorophoenicite}= 27.50 barns/electron
U=PE_{Magnesiochlorophoenicite} x rElectron Density= 88.67 barns/cc.

Radioactivity:

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

Magnesiochlorophoenicite Classification

Dana Class:

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

(41.01)where (A++)m (XO4)p Zq, with m:p>4:1

(41.01.01)Phoenicite Group

41.01.01.01 Chlorophoenicite (Mn,Mg)3Zn2(AsO4)(OH,O)6 C 2/m 2/m

41.01.01.02 Magnesiochlorophoenicite (Mg,Mn)3Zn2(AsO4)(OH,O)6 C 2/m 2/m

41.01.01.03 Jarosewichite Mn3Mn(AsO4)(OH)6 C 222,C mm2,C 2m2(/n) Ortho

Strunz Class:

08.BE.35 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.35 Chlorophoenicite (Mn,Mg)3Zn2(AsO4)(OH,O)6 C 2/m 2/m

08.BE.35 Magnesiochlorophoenicite (Mg,Mn)3Zn2(AsO4)(OH,O)6 C 2/m 2/m

Other Magnesiochlorophoenicite Information

References:

PHYS. PROP.(Enc. of Minerals,2nd ed.,1990) OPTIC PROP.(Enc. of Minerals,2nd ed.,1990)

See Also:

Links to other databases for Magnesiochlorophoenicite :
1 - Am. Min. Crystal Structure Database
2 - Athena
3 - GeoScienceWorld
4 - Google Images
5 - Google Scholar
6 - MinDAT
7 - Mineralienatlas (Deutsch)
8 - Online Mineral Museum
9 - QUT Mineral Atlas
10 - Ruff.Info

Search for Magnesiochlorophoenicite using:

[AOL] [Bing] [Dog Pile] [GeoScienceWorld] [HotBot] [Ixquick] [Lycos] [MAMMA] [Scirus] [Teoma] [WebCrawler] [Wikipedia] [YAHOO]

Visit our Advertisers for Magnesiochlorophoenicite :

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

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

Magnesiochlorophoenicite

(Mg,Mn)3Zn2(AsO4)(OH,O)6
Dana No: 41.01.01.02 Strunz No: 08.BE.35
Locality:

Notes:

Dakota Matrix
Excalibur Minerals
Exceptional Minerals
Hudson Insitute
John Betts Fine Minerals
Mc Dougall Minerals
Mineral News
Rock and Mineral Shows
Weinrich Minerals, Inc.