Coeruleolactite Mineral Data

Coeruleolactite Mineral Data

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General Coeruleolactite Information

Chemical Formula:

(Ca,Cu)Al6(PO4)4(OH)8·4-5(H2O)

Composition:

Molecular Weight = 817.38 gm

Calcium 2.94 % Ca 4.12 % CaO

Aluminum 19.81 % Al 37.42 % Al₂O₃

Copper 3.11 % Cu 3.50 % Cu₂O

Phosphorus 15.16 % P 34.73 % P₂O₅

Hydrogen 2.22 % H 19.84 % H₂O

Oxygen 56.76 % O

______ ______

100.00 % 99.61 % = TOTAL OXIDE

Empirical Formula:

Ca_0.6Cu_0.4Al₆(PO₄)₄(OH)₈·5(H₂O)

Environment:

In brown iron ore (Bog iron).

IMA Status:

Valid Species (Pre-IMA) 1871

Locality:

Rindsberg mine, near Katzenelnbogin, Rhineland-Palatinate, Germany. Link to MinDat.org Location Data.

Name Origin:

Named from the Greek for "blue" and "milk", for its typical color.

Coeruleolactite Image

Images:

Coeruleolactite

Comments: Hexagonal green crystal of coeruleolactite with brownish surface coating.
Location: Turquoise Mine, Cripple Creek, Cripple Creek District, Teller Co., Colorado, USA. Scale: 12x5x4 mm.
© John Betts - Fine Minerals

Coeruleolactite Crystallography

Axial Ratios:

a:b:c =0.7566:1:0.782

Cell Dimensions:

a = 7.529, b = 9.951, c = 7.782, Z = 1; alpha = 112.51°, beta = 116.54°, gamma = 68.57° V = 448.54 Den(Calc)= 3.03

Crystal System:

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

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

By Intensity(I/I_o): 2.96(1), 3.7(0.9), 3.48(0.5),

Physical Properties of Coeruleolactite

Cleavage:

None

Color:

Milk white, Light blue.

Density:

2.5 - 2.7, Average = 2.6

Diaphaniety:

Semitransparent

Fracture:

Conchoidal - Uneven - Uneven fracture producing small, conchoidal fragments.

Habit:

Cryptocrystalline - Occurs as crystals too small to distinguish with the naked eye.

Habit:

Encrustations - Forms crust-like aggregates on matrix.

Habit:

Fibrous - Crystals made up of fibers.

Hardness:

5 - Apatite

Luminescence:

Non-fluorescent.

Luster:

Vitreous - Waxy

Streak:

white

Optical Properties of Coeruleolactite

Gladstone-Dale:

CI meas= -0.015 (Superior) - where the CI = (1-KPDmeas/KC)
CI calc= 0.129 (Poor) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.1963,KPDmeas= 0.2287,KC= 0.2253

Optical Data:

Biaxial (+), a=1.58, b=1.599, g=1.605, bire=0.0250

Calculated Properties of Coeruleolactite

Electron Density:

r_electron=2.62 gm/cc
note: r_{Coeruleolactite}=2.60 gm/cc.

Fermion Index

Fermion Index = 0.00031
Boson Index = 0.99969

Photoelectric:

PE_{Coeruleolactite}= 3.01 barns/electron
U=PE_{Coeruleolactite} x r_electron= 7.88 barns/cc.

Radioactivity:

GRapi = 0 (Gamma Ray American Petroleum Institute Units)

Coeruleolactite is Not Radioactive

Coeruleolactite Classification

Dana Class:

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

(42.9)where (A)3 (XO4)2 Zq · x(H2O)

(42.9.3)Dana Group

42.9.3.1 Turquoise CuAl6(PO4)4(OH)8·4(H2O) P1 1

42.9.3.2 Coeruleolactite (Ca,Cu)Al6(PO4)4(OH)8·4-5(H2O) P1 1

42.9.3.3 Faustite (Zn,Cu)Al6(PO4)4(OH)8·4(H2O) P1 1

42.9.3.4 Chalcosiderite CuFe6(PO4)4(OH)8·4(H2O) P1 1

42.9.3.5 Aheylite (Fe,Zn)Al6(PO4)4(OH)8·4(H2O) P1 1

42.9.3.6 Planerite Al6(PO4)2(PO3OH)2(OH)8·4(H2O) P1 1

Strunz Class:

VII/D.15-20 VII - Phosphates, Arsenates and Vanadates

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

VII/D.15 - Turquoise group

VII/D.15-10 Planerite Al6(PO4)2(PO3OH)2(OH)8·4(H2O) P1 1

VII/D.15-20 Coeruleolactite (Ca,Cu)Al6(PO4)4(OH)8·4-5(H2O) P1 1

VII/D.15-30 Aheylite (Fe,Zn)Al6(PO4)4(OH)8·4(H2O) P1 1

VII/D.15-40 Turquoise CuAl6(PO4)4(OH)8·4(H2O) P1 1

VII/D.15-50 Faustite (Zn,Cu)Al6(PO4)4(OH)8·4(H2O) P1 1

VII/D.15-60 Chalcosiderite CuFe6(PO4)4(OH)8·4(H2O) P1 1

Other Coeruleolactite Information

References:

NAME( AntBidBlaNic4) PHYS. PROP.(AntBidBlaNic4) OPTIC PROP.(Enc. of Minerals,2nd ed.,1990)

See Also:

Links to other databases for Coeruleolactite :
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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Coeruleolactite

(Ca,Cu)Al6(PO4)4(OH)8·4-5(H2O)
Dana No: 42.9.3.2 Strunz No: VII/D.15-20
Locality:

Notes: