Phosphorrosslerite Mineral Data

General Phosphorrosslerite Information

Chemical Formula:

Mg(PO3OH)•7(H2O)

Composition:

Molecular Weight = 246.39 gm

Magnesium 9.86 % Mg 16.36 % MgO

Phosphorus 12.57 % P 28.80 % P₂O₅

Hydrogen 6.14 % H 54.84 % H₂O

Oxygen 71.43 % O

______ ______

100.00 % 100.00 % = TOTAL OXIDE

Empirical Formula:

Mg(PO₃OH)•7(H₂O)

Environment:

Cold (10 deg C) wet muck in an abandoned mine.

IMA Status:

Valid Species (Pre-IMA) 1939

Locality:

Stï¿½ublbau works, Schellgaden, Austria. Link to MinDat.org Location Data.

Name Origin:

Named as the phosphate analog of rosslerite.

Name Pronunciation:

Phosphorrosslerite + Pronunciation

Phosphorrosslerite Crystallography

Axial Ratios:

a:b:c =0.457:1:0.261

Cell Dimensions:

a = 11.61, b = 25.4, c = 6.63, Z = 8; beta = 94.77° V = 1,948.38 Den(Calc)= 1.68

Crystal System:

Monoclinic - Prismatic H-M Symbol (2/m) Space Group: A2/a

Physical Properties of Phosphorrosslerite

Color:

Colorless, Yellowish.

Density:

1.725

Diaphaneity:

Transparent to Translucent

Hardness:

2.5 - Finger Nail

Luster:

Vitreous (Glassy)

Optical Properties of Phosphorrosslerite

Gladstone-Dale:

CI meas= -0.029 (Excellent) - where the CI = (1-KPDmeas/KC)
CI calc= -0.057 (Good) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.2873,KPDmeas= 0.2798,KC= 0.2719
Ncalc = 1.46 - 1.47

Optical Data:

Biaxial (-), a=1.477, b=1.485, g=1.486, bire=0.0090, 2V(Calc)=38, 2V(Meas)=38.33.

Calculated Properties of Phosphorrosslerite

Electron Density:

Bulk Density (Electron Density)=1.82 gm/cc
note: Specific Gravity of Phosphorrosslerite =1.73 gm/cc.

Fermion Index:

Fermion Index = 0.01
Boson Index = 0.99

Photoelectric:

PE_{Phosphorrosslerite}= 0.97 barns/electron
U=PE_{Phosphorrosslerite} x rElectron Density= 1.77 barns/cc.

Radioactivity:

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

Phosphorrosslerite Classification

Dana Class:

39.01.09.02 (39)Hydrated Acid Phosphates, etc

(39.01)A+ [HXO4] ï¿½ x(H2O)

(39.01.09)Dana Group

39.01.09.01 Rosslerite Mg(AsO3OH)•7(H2O) A2/a 2/m

39.01.09.02 Phosphorrosslerite Mg(PO3OH)•7(H2O) A2/a 2/m

Strunz Class:

08.CE.20 08 - PHOSPHATES, ARSENATES, VANADATES

08.C - Phosphates without Additional Anions, with H2O

08.CE -With only medium-sized cations, RO4:H2O ï¿½ 1:2.5

08.CE.20 Rosslerite Mg(AsO3OH)•7(H2O) A2/a 2/m

08.CE.20 Phosphorrosslerite Mg(PO3OH)•7(H2O) A2/a 2/m

Other Phosphorrosslerite Information

References:

NAME( AntBidBlaNic4) PHYS. PROP.(Enc. of Minerals,2nd ed.,1990) OPTIC PROP.(Enc. of Minerals,2nd ed.,1990)

See Also:

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

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Phosphorrosslerite

Mg(PO3OH)•7(H2O)
Dana No: 39.01.09.02 Strunz No: 08.CE.20
Locality:

Notes:

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