Satterlyite Mineral Data

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General Satterlyite Information

Chemical Formula:

(Fe++,Mg)2(PO4)(OH)

Composition:

Molecular Weight = 207.90 gm

Magnesium 5.85 % Mg 9.69 % MgO

Iron 40.29 % Fe 51.84 % FeO

Phosphorus 14.90 % P 34.14 % P₂O₅

Hydrogen 0.48 % H 4.33 % H₂O

Oxygen 38.48 % O

______ ______

100.00 % 100.00 % = TOTAL OXIDE

Empirical Formula:

Fe²⁺_1.5Mg_0.5(PO₄)(OH)

Environment:

Found in phosphatic shales. Dimorph of wolfeite.

IMA Status:

Approved IMA 1978

Locality:

Big Fish River, NE YT, Canada. Link to MinDat.org Location Data.

Name Origin:

Named for Jack Satterly (1906-), geologist at Ontario Department of Mines, Canada.

Name Pronunciation:

Satterlyite + Pronunciation

Synonym:

IMA1976-056

Satterlyite Image

Images:

Satterlyite

Comments: Cleaved nodule of brown crystalline satterlyite aggregate.
Location: Big Fish River, Yukon, Canada. Scale: 3 x 1.5 cm.
© Dave Barthelmy

Satterlyite Crystallography

Axial Ratios:

a:c = 1:0.4438

Cell Dimensions:

a = 11.355, c = 5.0394, Z = 6; V = 562.71 Den(Calc)= 3.68

Crystal System:

Trigonal - Ditrigonal PyramidalH-M Symbol (3m) Space Group: P 3₁m

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

By Intensity(I/I_o): 2.473(1), 2.84(0.8), 3.52(0.7),

Crystal Structure:

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Kolitsch U , Andrut M , Giester G , European Journal of Mineralogy , 14 (2002) p.127-133, Satterlyite, (Fe,Mg)12(PO3OH)(PO4)5(OH,O)6: crystal structure, and infrared absorption spectra, Note: z-coordinate of O6 altered by author, August 2003.

Physical Properties of Satterlyite

Cleavage:

None

Color:

Light brown, Light yellow.

Density:

3.68

Diaphaneity:

Transparent

Habit:

Aggregates - Made of numerous individual crystals or clusters.

Habit:

Nodular - Tuberose forms having irregular protuberances over the surface.

Habit:

Radial - Crystals radiate from a center without producing stellar forms (e.g. stibnite)

Hardness:

4.5-5 - Near Apatite

Luster:

Vitreous (Glassy)

Streak:

light yellow

Optical Properties of Satterlyite

Dichroism (e):

brownish yellow.

Dichroism (w):

pale yellow.

Gladstone-Dale:

CI meas= -0.008 (Superior) - where the CI = (1-KPDmeas/KC)
CI calc= -0.008 (Superior) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.1957,KPDmeas= 0.1957,KC= 0.194
Ncalc = 1.71

Optical Data:

Uniaxial (-), e=1.719, w=1.721, bire=0.0020.

Calculated Properties of Satterlyite

Electron Density:

Bulk Density (Electron Density)=3.58 gm/cc
note: Specific Gravity of Satterlyite =3.68 gm/cc.

Fermion Index:

Fermion Index = 0.01
Boson Index = 0.99

Photoelectric:

PE_Satterlyite= 12.91 barns/electron
U=PE_Satterlyite x rElectron Density= 46.16 barns/cc.

Radioactivity:

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

Satterlyite Classification

Dana Class:

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

(41.06)where (A)2 (XO4) Zq

(41.06.04)Satterlyite Group

41.06.04.01 Satterlyite (Fe,Mg)2(PO4)(OH) P 3₁m 3m

41.06.04.02 Holtedahlite Mg12(PO3OH,CO3)(PO4)5(OH,O)6 P 3₁m 3m

Strunz Class:

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

08.B - Phosphates, etc. with Additional Anions, without H2O

08.BB -With only medium-sized cations, (OH, etc.):RO4 £ 1:1

08.BB.20 Holtedahlite Mg12(PO3OH,CO3)(PO4)5(OH,O)6 P 3₁m 3m

08.BB.20 Satterlyite (Fe,Mg)2(PO4)(OH) P 3₁m 3m

Other Satterlyite Information

References:

NAME( Dana8) PHYS. PROP.(Dana8, AmMin v 87, p 1735) OPTIC PROP.(Dana8)

See Also:

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

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Satterlyite

(Fe++,Mg)2(PO4)(OH)
Dana No: 41.06.04.01 Strunz No: 08.BB.20
Locality:

Notes: