Sarcopside Mineral Data

Sarcopside Mineral Data +

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General Sarcopside Information

Chemical Formula:

(Fe++,Mn,Mg)3(PO4)2

Composition:

Molecular Weight = 338.25 gm

Magnesium 2.16 % Mg 3.57 % MgO

Manganese 4.87 % Mn 6.29 % MnO

Iron 39.63 % Fe 50.98 % FeO

Phosphorus 17.40 % P 39.87 % P₂O₅

Oxygen 35.95 % O

______ ______

100.00 % 100.71 % = TOTAL OXIDE

Empirical Formula:

Fe²⁺_2.4Mn²⁺_0.3Mg_0.3(PO₄)_1.9

Environment:

Formed along with graftonite, probably by exsolution from triphylite, in complex zoned granite pegmatites.

IMA Status:

Valid Species (Pre-IMA) 1868

Locality:

Gory Sowie (Michelsdorf), in the Eulengebirge, Silesia, Poland. Link to MinDat.org Location Data.

Name Origin:

From the Greek for "flesh" and "view," in allusion to its apparent flesh-red color [due to intimate intergrowth with graftonite].

Synonym:

ICSD 72049

PDF 39-341

Sarcopside Image

Images:

Sarcopside

Comments: Brown massive sarcopside.
Location: Bull Moose Mine, Custer County, South Dakota, USA. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Sarcopside Crystallography

Axial Ratios:

a:b:c =2.1889:1:1.2638

Cell Dimensions:

a = 10.437, b = 4.768, c = 6.026, Z = 2; beta = 90° V = 299.88 Den(Calc)= 3.75

Crystal System:

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

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

By Intensity(I/I_o): 3.52(1), 2.547(0.81), 3.945(0.72),

Crystal Structure:

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Moore P B , American Mineralogist , 57 (1972) p.24-35, Sarcopside: Its atomic arrangement

View Additional jPOWD Structure files for Sarcopside
[1] [2]

Physical Properties of Sarcopside

Cleavage:

[100] Good, [001] Good, [010] Poor

Color:

Red, Purplish blue, Green, Reddish brown.

Density:

3.64 - 3.73, Average = 3.68

Diaphaniety:

Transparent to Translucent

Fracture:

Splintery - Thin, elongated fractures produced by intersecting good cleavages or partings (e.g. hornblende).

Habit:

Fibrous - Crystals made up of fibers.

Hardness:

4 - Fluorite

Luminescence:

Non-fluorescent.

Luster:

Silky

Streak:

white

Optical Properties of Sarcopside

Gladstone-Dale:

CI meas= -0.025 (Excellent) - where the CI = (1-KPDmeas/KC)
CI calc= -0.007 (Superior) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.1897,KPDmeas= 0.193,KC= 0.1883

Optical Data:

Biaxial (-), a=1.67-1.676, b=1.728-1.73, g=1.73-1.734, bire=0.0580-0.0600, 2V(Calc)=20-28, 2V(Meas)=26-28. Dispersion r > v perceptible.

Calculated Properties of Sarcopside

Electron Density:

r_electron=3.61 gm/cc
note: r_Sarcopside=3.75 gm/cc.

Fermion Index

Fermion Index = 0.01072
Boson Index = 0.98928

Photoelectric:

PE_Sarcopside= 14.10 barns/electron
U=PE_Sarcopside x r_electron= 50.88 barns/cc.

Radioactivity:

GRapi = 0 (Gamma Ray American Petroleum Institute Units)

Sarcopside is Not Radioactive

Sarcopside Classification

Dana Class:

38.3.1.1 (38)Anhydrous Phosphates, etc

(38.3)(A+ B++)3 (XO4)2

(38.3.1)Dana Group

38.3.1.1 Sarcopside (Fe,Mn,Mg)3(PO4)2 P 2₁/a 2/m

38.3.1.2 Farringtonite Mg3(PO4)2 P 2₁/a 2/m

Strunz Class:

VII/A.04-10 VII - Phosphates, Arsenates and Vanadates

VII/A - Waterfree phosphates [PO4]3- without unfamiliar anions. cations of medium size: Mostly Fe, Mn

VII/A.04 - Sarcopside - Beusite series

VII/A.04-10 Sarcopside (Fe,Mn,Mg)3(PO4)2 P 2₁/a 2/m

VII/A.04-20 Graftonite (Fe,Mn,Ca)3(PO4)2 P 2₁/c 2/m

VII/A.04-30 Beusite (Mn,Fe,Ca,Mg)3(PO4)2 P 2₁/c 2/m

Other Sarcopside Information

References:

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

See Also:

Links to other databases for Sarcopside :
1 -Am. Min. Crystal Structure Database 2 -Athena 3 - EUROmin Project 4 -Google Images 5 -Google Scholar 6 -Handbook of Mineralogy (UofA) 7 -MinDAT 8 -MinMax(Deutsch) 9 -MinMax(English) 10 -Mineralienatlas (Deutsch) 11 -QUT Mineral Atlas 12 - WWW-MINCRYST 13 -École des Mines de Paris

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

Sarcopside

(Fe++,Mn,Mg)3(PO4)2
Dana No: 38.3.1.1 Strunz No: VII/A.04-10
Locality:

Notes: