Ferrisymplesite Mineral Data

Ferrisymplesite Mineral Data +

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General Ferrisymplesite Information

Chemical Formula:

Fe+++3(AsO4)2(OH)3·5(H2O)

Composition:

Molecular Weight = 586.48 gm

Iron 28.57 % Fe 40.84 % Fe₂O₃

Arsenic 25.55 % As 39.19 % As₂O₅

Hydrogen 2.23 % H 19.97 % H₂O

Oxygen 43.65 % O

______ ______

100.00 % 100.00 % = TOTAL OXIDE

Empirical Formula:

Fe³⁺₃(AsO₄)₂(OH)₃·5(H₂O)

IMA Status:

Valid Species (Pre-IMA) 1924

Locality:

Link to MinDat.org Location Data.

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Ferrisymplesite Crystallography

Crystal System:

Amorphous- No Crystals

Physical Properties of Ferrisymplesite

Color:

Yellow brown, Resin brown.

Density:

2.88

Diaphaniety:

Transparent to Translucent

Habit:

Fibrous - Crystals made up of fibers.

Hardness:

2.5 - Finger Nail

Luminescence:

Non-fluorescent.

Luster:

Resinous

Optical Properties of Ferrisymplesite

Gladstone-Dale:

CI meas= 0.105 (Poor) - where the CI = (1-KPDmeas/KC)
KPDmeas= 0.2326,KC= 0.26

Optical Data:

Isotropic, n=1.67.

Calculated Properties of Ferrisymplesite

Electron Density:

r_electron=2.80 gm/cc
note: r_{Ferrisymplesite}=2.88 gm/cc.

Fermion Index

Fermion Index = 0.00626
Boson Index = 0.99374

Photoelectric:

PE_{Ferrisymplesite}= 25.65 barns/electron
U=PE_{Ferrisymplesite} x r_electron= 71.79 barns/cc.

Radioactivity:

GRapi = 0 (Gamma Ray American Petroleum Institute Units)

Ferrisymplesite is Not Radioactive

Ferrisymplesite Classification

Dana Class:

42.10.1.1 (42)Hydrated Phosphates, etc., Containing Hydroxyl or Halogen

(42.10)where (AB)3 (XO4)2 Zq · x(H2O)

(42.10.1)Dana Group

42.10.1.1 Ferrisymplesite Fe3(AsO4)2(OH)3·5(H2O) None

42.10.1.2 Santabarbaraite! Fe3(PO4)2(OH)3·5(H2O) None

Strunz Class:

VII/D.48-20 VII - Phosphates, Arsenates and Vanadates

VII/D - Water-bearing phosphates with unfamiliar anions, cations of very big and medium size: Al, Mg and Ca, Na, K

VII/D.48 - Gutsevichite - Yukonite series

VII/D.48-10 Gutsevichite? Al3(PO4)2(OH)3·8(H2O) Unk Cubic

VII/D.48-15 Santabarbaraite! Fe3(PO4)2(OH)3·5(H2O) None

VII/D.48-20 Ferrisymplesite Fe3(AsO4)2(OH)3·5(H2O) None

VII/D.48-40 Yukonite Ca7Fe11(AsO4)9O10·24.3(H2O) None

Other Ferrisymplesite Information

References:

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

See Also:

Links to other databases for Ferrisymplesite :
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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Print or Cut-and-Paste your Ferrisymplesite Specimen Label here :

Ferrisymplesite

Fe+++3(AsO4)2(OH)3·5(H2O)
Dana No: 42.10.1.1 Strunz No: VII/D.48-20
Locality:

Notes: