Mcauslanite Mineral Data

Mcauslanite Mineral Data +

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General Mcauslanite Information

Chemical Formula:

HFe++3Al2(PO4)4F·18(H2O)

Composition:

Molecular Weight = 945.67 gm

Aluminum 5.71 % Al 10.78 % Al₂O₃

Iron 17.72 % Fe 22.79 % FeO

Phosphorus 13.10 % P 30.02 % P₂O₅

Hydrogen 3.94 % H 35.24 % H₂O

Oxygen 57.52 % O

Fluorine 2.01 % F 2.01 % F

- % F -0.85 % -O=F₂

______ ______

100.00 % 100.00 % = TOTAL OXIDE

Empirical Formula:

HFe²⁺₃Al₂(PO₄)₄F·18(H₂O)

Environment:

Complex supergene enrichment area of iron phosphates.

IMA Status:

Approved IMA 1988

Locality:

East Kemptville tin mine, Yarmouth County, NS, Canada. Link to MinDat.org Location Data.

Name Origin:

Named for David A. McAuslan, exploration manager, Shell Canada Resources LTD., who discovered the locality.

Synonym:

IMA1986-051

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Mcauslanite Crystallography

Axial Ratios:

a:b:c =0.8692:1:0.5954

Cell Dimensions:

a = 10.055, b = 11.568, c = 6.888, Z = 1; alpha = 105.84°, beta = 93.66°, gamma = 106.47° V = 737.63 Den(Calc)= 2.13

Crystal System:

Triclinic - PedialH-M Symbol (1) Space Group: P1

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

By Intensity(I/I_o): 4.96(1), 10.6(0.9), 9.53(0.85),

Physical Properties of Mcauslanite

Cleavage:

[110] Good

Color:

Colorless, Yellowish white.

Density:

2.22

Diaphaniety:

Translucent

Fracture:

Brittle - Generally displayed by glasses and most non-metallic minerals.

Habit:

Bladed - Aggregates of thin lath-like crystals (e.g. kyanite).

Habit:

Fibrous - Crystals made up of fibers.

Habit:

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

Hardness:

3.5 - Copper Penny

Luster:

Vitreous - Silky

Streak:

white

Optical Properties of Mcauslanite

Gladstone-Dale:

CI meas= 0.011 (Superior) - where the CI = (1-KPDmeas/KC)
CI calc= -0.031 (Excellent) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.2484,KPDmeas= 0.2383,KC= 0.2409

Optical Data:

Biaxial (-), a=1.522, b=1.531, g=1.534, bire=0.0120, 2V(Calc)=58, 2V(Meas)=55-59.7.

Calculated Properties of Mcauslanite

Electron Density:

r_electron=2.26 gm/cc
note: r_Mcauslanite=2.22 gm/cc.

Fermion Index

Fermion Index = 0.00403
Boson Index = 0.99597

Photoelectric:

PE_Mcauslanite= 5.96 barns/electron
U=PE_Mcauslanite x r_electron= 13.48 barns/cc.

Radioactivity:

GRapi = 0 (Gamma Ray American Petroleum Institute Units)

Mcauslanite is Not Radioactive

Mcauslanite Classification

Dana Class:

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

(42.11)where (AB)4 (XO4)3 Zq · x(H2O)

(42.11.22)Dana Group

42.11.22.1 Mcauslanite HFe3Al2(PO4)4F·18(H2O) P1 1

Strunz Class:

VII/D.04-10 VII - Phosphates, Arsenates and Vanadates

VII/D - Water-bearing phosphates with unfamiliar anions, cations of medium size: Cu, Zn, Mn, Al, Fe

VII/D.04 - Mcauslanite - Sinkankasite series

VII/D.04-10 Mcauslanite HFe3Al2(PO4)4F·18(H2O) P1 1

VII/D.04-20 Sinkankasite H2MnAl(PO4)2(OH)·6(H2O) P1 1

Other Mcauslanite Information

References:

NAME( Dana8) PHYS. PROP.(Dana8) OPTIC PROP.(Am.Min.,Vol.75,p707,1990)

See Also:

Links to other databases for Mcauslanite :
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 Mcauslanite Specimen Label here :

Mcauslanite

HFe++3Al2(PO4)4F·18(H2O)
Dana No: 42.11.22.1 Strunz No: VII/D.04-10
Locality:

Notes: