Sicklerite Mineral Data (original) (raw)

General Sicklerite Information

Help on Chemical Formula: Chemical Formula:

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

Help on Composition: Composition:

Molecular Weight = 157.08 gm

Lithium 4.42 % Li 9.51 % Li2O

Manganese 26.23 % Mn 33.87 % MnO

Iron 8.89 % Fe 11.43 % FeO

Phosphorus 19.72 % P 45.18 % P2O5

Oxygen 40.74 % O

______ ______

100.00 % 100.00 % = TOTAL OXIDE

Help on Empirical Formula: Empirical Formula:

LiMn2+0.75Fe2+0.25(PO4)

Help on Environment: Environment:

Granitic pegmatites.

Help on IMA Status: IMA Status:

Valid Species (Pre-IMA) 1912

Help on Locality: Locality:

Stuart mine, Queen Mountain, Pala, San Diego Co., California. Link to MinDat.org Location Data.

Help on Name Origin: Name Origin:

Named after the discoverer of the Pala pegmatite deposits, Sickler.

Help on Name Pronunciation: Name Pronunciation:

Sicklerite + Pronunciation Say SICKLERITE

Sicklerite Image

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Sicklerite Crystallography

Help on Axial Ratios: Axial Ratios:

a:b:c =0.5909:1:0.4763

Help on Cell Dimensions: Cell Dimensions:

a = 5.9468, b = 10.0631, c = 4.7935, Z = 4; V = 286.86 Den(Calc)= 3.64

Help on Crystal System: Crystal System:

Orthorhombic - DipyramidalH-M Symbol (2/m 2/m 2/m) Space Group: Pmnb

Help on X Ray Diffraction: X Ray Diffraction:

By Intensity(I/Io): 2.971(1), 2.495(0.75), 3.497(0.4),

Physical Properties of Sicklerite

Help on Cleavage: Cleavage:

{100} Good

Help on Color: Color:

Dark brown, Yellow.

Help on Density: Density:

3.4 - 3.45, Average = 3.42

Help on Diaphaneity: Diaphaneity:

Opaque

Help on Fracture: Fracture:

Uneven - Flat surfaces (not cleavage) fractured in an uneven pattern.

Help on Habit: Habit:

Cleaveable - Easily cleaved into fragments.

Help on Habit: Habit:

Massive - Granular - Common texture observed in granite and other igneous rock.

Help on Hardness: Hardness:

4 - Fluorite

Help on Luminescence: Luminescence:

Non-fluorescent.

Help on Luster: Luster:

Earthy (Dull)

Help on Streak: Streak:

light ochre brown

Optical Properties of Sicklerite

Help on Gladstone-Dale: Gladstone-Dale:

CI meas= -0.103 (Poor) - where the CI = (1-KPDmeas/KC)
CI calc= -0.038 (Excellent) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.2076,KPDmeas= 0.2207,KC= 0.2001
Ncalc = 1.68 - 1.73

Help on Optical Data: Optical Data:

Biaxial (-), a=1.715-1.74, b=1.735-1.77, g=1.745-1.83, bire=0.0300-0.0900, 2V(Calc)=68-74, 2V(Meas)=60-90. Dispersion relatively strong.

Help on Pleochroism (x): Pleochroism (x):

colorless or deep red.

Help on Pleochroism (y): Pleochroism (y):

colorless or pale red.

Help on Pleochroism (z): Pleochroism (z):

colorless or very pale red.

Calculated Properties of Sicklerite

Help on Electron Density: Electron Density:

Bulk Density (Electron Density)=3.49 gm/cc
note: Specific Gravity of Sicklerite =3.64 gm/cc.

Help on Fermion Index: Fermion Index:

Fermion Index = 0.0053940389
Boson Index = 0.9946059611

Help on Photoelectric: Photoelectric:

PESicklerite = 10.44 barns/electron
U=PESicklerite x rElectron Density= 36.41 barns/cc.

Help on Radioactivity: Radioactivity:

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

Sicklerite Classification

Help on Dana Class: Dana Class:

38.01.04.02 (38)Anhydrous Phosphates, etc

(38.01)A+ B++ XO4

(38.01.04)Dana Group

38.01.04.01 Ferrisicklerite Li(Fe,Mn)PO4 Pmnb 2/m 2/m 2/m

38.01.04.02 Sicklerite Li(Mn,Fe)PO4 Pmnb 2/m 2/m 2/m

Help on Strunz Class: Strunz Class:

08.AB.10 08 - PHOSPHATES, ARSENATES, VANADATES

08.A - Phosphates, etc. without additional anions, without H2O

08.AB -With medium-sized cations

08.AB.10 Ferrisicklerite Li(Fe,Mn)PO4 Pmnb 2/m 2/m 2/m

08.AB.10 Heterosite FePO4 Pmnb 2/m 2/m 2/m

08.AB.10 Natrophilite NaMnPO4 Pnam 2/m 2/m 2/m

08.AB.10 Lithiophilite LiMnPO4 Pmnb 2/m 2/m 2/m

08.AB.10 Purpurite MnPO4 Pmnb 2/m 2/m 2/m

08.AB.10 Sicklerite Li(Mn,Fe)PO4 Pmnb 2/m 2/m 2/m

08.AB.10 Simferite Li(Mg,Fe,Mn)2(PO4)2 Pbnm or Pbn21 Ortho

08.AB.10 Triphylite LiFePO4 Pbnm 2/m 2/m 2/m

Other Sicklerite Information

Help on References: References:

NAME( Duda&Rejl90) PHYS. PROP.(Enc. of Minerals,2nd ed.,1990) OPTIC PROP.(Ford32)

Help on See Also: See Also:

Links to other databases for Sicklerite :
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
15 - Scandinavian mineral gallery

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Ask about Sicklerite here :
Ask-A-Mineralogist from the Mineralogical Society of America
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Print or Cut-and-Paste your Sicklerite Specimen Label here :

Sicklerite

Li(Mn++,Fe+++)PO4
Dana No: 38.01.04.02 Strunz No: 08.AB.10
Locality:

Notes: