Satterlyite Mineral Data

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.

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

Diaphaniety:

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

Optical Data:

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

Calculated Properties of Satterlyite

Electron Density:

r_electron=3.58 gm/cc
note: r_Satterlyite=3.68 gm/cc.

Fermion Index

Fermion Index = 0.01457
Boson Index = 0.98543

Photoelectric:

PE_Satterlyite= 12.91 barns/electron
U=PE_Satterlyite x r_electron= 46.16 barns/cc.

Radioactivity:

GRapi = 0 (Gamma Ray American Petroleum Institute Units)

Satterlyite is Not Radioactive

Satterlyite Classification

Dana Class:

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

(41.6)where (A)2 (XO4) Zq

(41.6.4)Dana Group

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

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

Strunz Class:

VII/B.04-30 VII - Phosphates, Arsenates and Vanadates

VII/B - Waterfree phosphates with unfamiliar anions F, Cl, O,OH, cations of medium size: Mg, Mn, Fe, Cu, Zn, Pseudomalachite group and related compounds

VII/B.04 - Althausite - Satterlyite series

VII/B.04-10 Althausite Mg2(PO4)(OH,F,O) P na2₁ mm2

VII/B.04-20 Holtedahlite Mg12(PO3OH,CO3)(PO4)5(OH,O)6 P 3₁m 3m

VII/B.04-25 Phosphoellenbergerite! Mg14(PO4)6(PO3OH,CO3)2(OH)6 P 6₃mc 6mm

VII/B.04-30 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 -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 -École des Mines de Paris

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Satterlyite

(Fe++,Mg)2(PO4)(OH)
Dana No: 41.6.4.1 Strunz No: VII/B.04-30
Locality:

Notes: