Philipsburgite Mineral Data

Philipsburgite Mineral Data +

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General Philipsburgite Information

Chemical Formula:

(Cu,Zn)6(AsO4,PO4)2(OH)6·(H2O)

Composition:

Molecular Weight = 759.97 gm

Zinc 12.91 % Zn 16.06 % ZnO

Copper 37.63 % Cu 47.10 % CuO

Arsenic 14.79 % As 22.68 % As₂O₅

Phosphorus 2.04 % P 4.67 % P₂O₅

Hydrogen 1.06 % H 9.48 % H₂O

Oxygen 31.58 % O

______ ______

100.00 % 100.00 % = TOTAL OXIDE

Empirical Formula:

6(Cu_0.75)6(Zn_0.25)(AsO₄)_1.5(PO₄)_0.5(OH)₆·(H₂O)

Environment:

Found in zone of secondary minerals. As analog of kipusite.

IMA Status:

Approved IMA 1985

Locality:

Black Pine mine, Flink Creek Valley, John Long Mountains, 14.5 km west of Philipsburg, Montana, USA. Link to MinDat.org Location Data.

Name Origin:

Named for the locality

Philipsburgite Image

Images:

Philipsburgite

Comments: Green botryoidal micro crystals of philipsburgite.
Location: Gold Hill mine, Tooele County, Utah, USA. Scale: Picture size 5 mm.
© John Veevaert

Philipsburgite Crystallography

Axial Ratios:

a:b:c =1.3402:1:1.1619

Cell Dimensions:

a = 12.33, b = 9.2, c = 10.69, Z = 4; beta = 96.92° V = 1,203.80 Den(Calc)= 4.19

Crystal System:

Monoclinic - PrismaticH-M Symbol (2/m) Space Group: P 2₁/c

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

By Intensity(I/I_o): 2.559(1), 4.05(0.9), 12.2(0.8),

Physical Properties of Philipsburgite

Cleavage:

None

Color:

Emerald green.

Density:

4.07

Diaphaniety:

Transparent to Semiopaque

Hardness:

3-4 - Calcite-Fluorite

Luminescence:

Non-fluorescent.

Luster:

Vitreous (Glassy)

Streak:

light green

Optical Properties of Philipsburgite

Gladstone-Dale:

CI meas= -0.02 (Excellent) - where the CI = (1-KPDmeas/KC)
CI calc= 0.01 (Superior) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.1812,KPDmeas= 0.1866,KC= 0.183

Optical Data:

Biaxial (-), a=1.729, b=1.774, g=1.775, bire=0.0460, 2V(Calc)=16, 2V(Meas)=16. Dispersion r >> v.

Pleochroism (x):

pale green.

Pleochroism (y):

medium green.

Pleochroism (z):

medium green.

Calculated Properties of Philipsburgite

Electron Density:

r_electron=3.98 gm/cc
note: r_{Philipsburgite}=4.19 gm/cc.

Fermion Index

Fermion Index = 0.00544
Boson Index = 0.99456

Photoelectric:

PE_{Philipsburgite}= 33.42 barns/electron
U=PE_{Philipsburgite} x r_electron= 132.85 barns/cc.

Radioactivity:

GRapi = 0 (Gamma Ray American Petroleum Institute Units)

Philipsburgite is Not Radioactive

Philipsburgite Classification

Dana Class:

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

(42.2)where (AB)3 (XO4) Zq · x(H2O)

(42.2.4)Dana Group

42.2.4.1 Kipushite (Cu,Zn)5Zn(PO4)2(OH)6·(H2O) P 2₁/c 2/m

42.2.4.2 Philipsburgite (Cu,Zn)6(AsO4,PO4)2(OH)6·(H2O) P 2₁/c 2/m

Strunz Class:

VII/D.19-20 VII - Phosphates, Arsenates and Vanadates

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

VII/D.19 - Kipushite - Veszelyite series

VII/D.19-10 Kipushite (Cu,Zn)5Zn(PO4)2(OH)6·(H2O) P 2₁/c 2/m

VII/D.19-20 Philipsburgite (Cu,Zn)6(AsO4,PO4)2(OH)6·(H2O) P 2₁/c 2/m

VII/D.19-30 Veszelyite (Cu,Zn)2ZnPO4(OH)3·2(H2O) P 2₁/a 2/m

Other Philipsburgite Information

References:

NAME( Dana8) PHYS. PROP.(Enc. of Minerals,2nd ed.,1990) OPTIC PROP.(Dana8)

See Also:

Links to other databases for Philipsburgite :
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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Philipsburgite

(Cu,Zn)6(AsO4,PO4)2(OH)6·(H2O)
Dana No: 42.2.4.2 Strunz No: VII/D.19-20
Locality:

Notes: