Simferite Mineral Data

Simferite Mineral Data +

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General Simferite Information

Chemical Formula:

Li(Mg,Fe+++,Mn+++)2(PO4)2

Composition:

Molecular Weight = 273.61 gm

Lithium 2.54 % Li 5.46 % Li₂O

Magnesium 9.77 % Mg 16.20 % MgO

Manganese 6.02 % Mn 8.66 % Mn₂O₃

Iron 12.25 % Fe 17.51 % Fe₂O₃

Phosphorus 22.64 % P 51.88 % P₂O₅

Oxygen 46.78 % O

______ ______

100.00 % 99.71 % = TOTAL OXIDE

Empirical Formula:

LiMg_1.1Fe³⁺_0.6Mn³⁺_0.3(PO₄)₂

Environment:

Occurs at the contact of REE-bearing pegmatite and phlogopitized tremolitic rock.

IMA Status:

Approved IMA 1999

Locality:

Radionovskoye pegmatite field, middle Berda River, Zaporozhe district, Ukraine. Link to MinDat.org Location Data.

Name Origin:

Named for the city of Simferpol, Crimea, Urkrane.

Synonym:

ICSD 71764

PDF 81-424

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Simferite Crystallography

Axial Ratios:

a:b:c =0.4699:1:0.584

Cell Dimensions:

a = 4.747, b = 10.101, c = 5.899, Z = 2; V = 282.85 Den(Calc)= 3.21

Crystal System:

OrthorhombicSpace Group: Pbnm,Pbn21

Physical Properties of Simferite

Color:

Dark red.

Density:

3.25

Habit:

Aggregates - Made of numerous individual crystals or clusters.

Optical Properties of Simferite

Gladstone-Dale:

CI meas= 0.033 (Excellent) - where the CI = (1-KPDmeas/KC)
CI calc= 0.021 (Excellent) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.2207,KPDmeas= 0.2179,KC= 0.2253

Optical Data:

Biaxial (?), a=1.69-1.704, b=1.702-1.716, g=1.712-1.726, bire=0.0220

Calculated Properties of Simferite

Electron Density:

r_electron=3.13 gm/cc
note: r_Simferite=3.21 gm/cc.

Fermion Index

Fermion Index = 0.01449
Boson Index = 0.98551

Photoelectric:

PE_Simferite= 6.52 barns/electron
U=PE_Simferite x r_electron= 20.38 barns/cc.

Radioactivity:

GRapi = 0 (Gamma Ray American Petroleum Institute Units)

Simferite is Not Radioactive

Simferite Classification

Dana Class:

38.5.7.1 (38)Anhydrous Phosphates, etc

(38.5)with miscellaneous formulae

(38.5.7)Dana Group

38.5.7.1 Simferite Li(Mg,Fe,Mn)2(PO4)2 Pbnm,Pbn21 Ortho

Strunz Class:

VII/A.02-05 VII - Phosphates, Arsenates and Vanadates

VII/A - Waterfree phosphates [PO4]3- without unfamiliar anions. cations of medium size: Mostly Fe, Mn

VII/A.02 - Simferrite - Natrophilite series

VII/A.02-05 Simferite Li(Mg,Fe,Mn)2(PO4)2 Pbnm,Pbn21 Ortho

VII/A.02-10 Triphylite LiFePO4 Pbnm 2/m 2/m 2/m

VII/A.02-20 Lithiophilite LiMnPO4 Pmnb 2/m 2/m 2/m

VII/A.02-30 Ferrisicklerite Li(Fe,Mn)PO4 Pmnb 2/m 2/m 2/m

VII/A.02-40 Sicklerite Li(Mn,Fe)PO4 Pmnb 2/m 2/m 2/m

VII/A.02-50 Heterosite FePO4 Pmnb 2/m 2/m 2/m

VII/A.02-60 Purpurite MnPO4 Pmnb 2/m 2/m 2/m

VII/A.02-70 Maricite NaFePO4 Pmnb 2/m 2/m 2/m

VII/A.02-80 Natrophilite NaMnPO4 Pnam 2/m 2/m 2/m

Other Simferite Information

References:

NAME( Dana8) PHYS. PROP.(Am.Min.,Vol.78,p452,1993) OPTIC PROP.(Am.Min.,Vol.78,p452,1993)

See Also:

Links to other databases for Simferite :
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 - WWW-MINCRYST 13 -École des Mines de Paris

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Simferite

Li(Mg,Fe+++,Mn+++)2(PO4)2
Dana No: 38.5.7.1 Strunz No: VII/A.02-05
Locality:

Notes: