Glushinskite Mineral Data

General Glushinskite Information

Chemical Formula:

Mg(C2O4)•2(H2O)

Composition:

Molecular Weight = 148.36 gm

Magnesium 16.38 % Mg 27.17 % MgO

Hydrogen 2.72 % H 24.29 % H₂O

Carbon 16.19 % C 48.55 % C₂O₃

Oxygen 64.71 % O

______ ______

100.00 % 100.00 % = TOTAL OXIDE

Empirical Formula:

Mg(C₂O₄)•2(H₂O)

Environment:

Formed by reaction between Mg-rich minerals and oxalic acid secreted by incrusting lichen.

IMA Status:

Approved IMA 1987

Locality:

Mill of Johnston, six km west-southwest of Insch, Kincardineshire, and on the Island of Rhum, Inner Hebrides. Scotland. Link to MinDat.org Location Data.

Name Origin:

Named for Petr Ivanovich Glushinskii (1908- ), coal geologist, Institute of Arctic and Antarctic Geology, St. Petersburg, Russia.

Name Pronunciation:

Glushinskite + Pronunciation

Synonym:

Magnesium Oxalate

Glushinskite Image

Images:

Glushinskite

Comments: White coatings of glushinskite on dirty, tan gypsum.
Location: San Simon, Cochise County, Arizona, USA. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Images:

Glushinskite

Comments: SEM photo of two large euhedral glushinskite crystals partially embedded in the dried, rotten saguaro matrix. (AmMin, 88:1883).
Location: Crystals associated with the remains of a saguaro, Carnegiea gigantea from south and west central Arizona. Scale: Scale bar 150 µ-m.
© American Mineralogist

Glushinskite Crystallography

Axial Ratios:

a:b:c =2.3446:1:1.8468

Cell Dimensions:

a = 12.675, b = 5.406, c = 9.984, Z = 4; beta = 129.45° V = 528.26 Den(Calc)= 1.87

Crystal System:

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

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

By Intensity(I/I_o): 4.89(1), 3.179(0.7), 2.039(0.6),

Physical Properties of Glushinskite

Color:

White, White, Colorless.

Density:

1.85

Streak:

white

Optical Properties of Glushinskite

Gladstone-Dale:

CI meas= -0.961 (Poor) - where the CI = (1-KPDmeas/KC)
CI calc= -0.94 (Poor) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.2656,KPDmeas= 0.2685,KC= 0.1369
Ncalc = 1.25 - 1.26

Optical Data:

Biaxial (-), a=1.365, b=1.53, g=1.595, bire=0.2300

Calculated Properties of Glushinskite

Electron Density:

Bulk Density (Electron Density)=1.92 gm/cc
note: Specific Gravity of Glushinskite =1.87 gm/cc.

Fermion Index:

Fermion Index = 0.01
Boson Index = 0.99

Photoelectric:

PE_Glushinskite= 0.61 barns/electron
U=PE_Glushinskite x rElectron Density= 1.17 barns/cc.

Radioactivity:

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

Glushinskite Classification

Dana Class:

50.01.03.02 (50)Salts of Organic Acids

(50.01)(Oxalates)

(50.01.03)Humboldtine Group

50.01.03.01 Humboldtine Fe(C2O4)•2(H2O) I2/a 2/m

50.01.03.02 Glushinskite Mg(C2O4)•2(H2O) C 2/c 2/m

50.01.03.03 Lindbergite! Mn(C2O4)•2(H2O) C 2/c 2/m

Strunz Class:

10.AB.10 10 - ORGANIC COMPOUNDS

10.A - Salts of Organic Acids

10.AB -Oxalates

10.AB.10 Glushinskite Mg(C2O4)•2(H2O) C 2/c 2/m

Other Glushinskite Information

References:

NAME( AntBidBlaNic2) PHYS. PROP.(Enc. of Minerals,2nd ed.,1990) OPTIC PROP.(Enc. of Minerals,2nd ed.,1990)

See Also:

Links to other databases for Glushinskite :
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

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

Glushinskite

Mg(C2O4)•2(H2O)
Dana No: 50.01.03.02 Strunz No: 10.AB.10
Locality:

Notes:

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