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].

Name Pronunciation:

Sarcopside + Pronunciation

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

Diaphaneity:

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
Ncalc = 1.69 - 1.71

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:

Bulk Density (Electron Density)=3.61 gm/cc
note: Specific Gravity of Sarcopside =3.75 gm/cc.

Fermion Index:

Fermion Index = 0.01
Boson Index = 0.99

Photoelectric:

PE_Sarcopside= 14.10 barns/electron
U=PE_Sarcopside x rElectron Density= 50.88 barns/cc.

Radioactivity:

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

Sarcopside Classification

Dana Class:

38.03.01.01 (38)Anhydrous Phosphates, etc

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

(38.03.01)Sarcopside Group

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

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

38.03.01.03 Chopinite! (Mg,Fe)3(PO4)2 P 2₁/c 2/m

Strunz Class:

08.AB.15 08 - PHOSPHATES, ARSENATES, VANADATES

08.A - Phosphates, etc. without additional anions, without H2O

08.AB -With medium-sized cations

08.AB.15 Sarcopside (Fe,Mn,Mg)3(PO4)2 P 2₁/a 2/m

08.AB.15 Chopinite! (Mg,Fe)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 - Ecole des Mines de Paris
5 - GeoScienceWorld
6 - Google Images
7 - Google Scholar
8 - Handbook of Mineralogy (MinSocAm)
9 - Handbook of Mineralogy (UofA)
10 - MinDAT
11 - Mineralienatlas (Deutsch)
12 - Online Mineral Museum
13 - QUT Mineral Atlas
14 - Ruff.Info
15 - WWW-MINCRYST

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Ask about Sarcopside here :
Ask-A-Mineralogist from the Mineralogical Society of America
Mindat.org's Discussion Groups
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Rockhounds Discussion Group on Yahoo Groups
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Print or Cut-and-Paste your Sarcopside Specimen Label here :

Sarcopside

(Fe++,Mn,Mg)3(PO4)2
Dana No: 38.03.01.01 Strunz No: 08.AB.15
Locality:

Notes: