Calciopetersite Mineral Data

General Calciopetersite Information

Chemical Formula:

CaCu6[(PO4)2(PO3OH)(OH)6]•3(H2O)

Composition:

Molecular Weight = 907.06 gm

Potassium 0.09 % K 0.10 % K₂O

Calcium 3.18 % Ca 4.45 % CaO

Lanthanum 0.61 % La 0.72 % La₂O₃

Cerium 1.70 % Ce 1.99 % Ce₂O₃

Praeseodymium 0.16 % Pr 0.18 % Pr₂O₃

Dysprosium 0.36 % Dy 0.41 % Dy₂O₃

Yttrium 1.27 % Y 1.62 % Y₂O₃

Ytterbium 0.19 % Yb 0.22 % Yb₂O₃

Copper 41.33 % Cu 51.74 % CuO

Silicon 0.25 % Si 0.53 % SiO₂

Arsenic 1.82 % As 2.79 % As₂O₅

Phosphorus 9.25 % P 21.20 % P₂O₅

Hydrogen 1.41 % H 12.56 % H₂O

Neodymium 1.27 % Nd 1.48 % Nd₂O₃

Oxygen 37.11 % O

______ ______

100.00 % 100.00 % = TOTAL OXIDE

Empirical Formula:

Ca_0.58Y_0.13Ce_0.11Nd_0.08La_0.04K_0.02Dy_0.02Pr_0.01Yb_0.01Cu_5.9Ca_0.14(PO₄)_2.06(PO₃OH)_0.65 (AsO₄)_0.22(SiO₄)_0.08(OH)₆ï¿½3(H₂O)

Environment:

Occurs in cavities in quartz veins at an abandoned quarry.

IMA Status:

Approved IMA 2001 (Dana # Added)

Locality:

Domasov nad Bystrici, northern Moravia, Czech Republic. Link to MinDat.org Location Data.

Name Origin:

Name is derived from its composition and relationship to petersite-(Y).

Synonym:

IMA2001-004

Calciopetersite Image

Images:

Calciopetersite

Comments: SEM image of calciopetersite in fine radiating spray; note the hexagonal outline of crystals. (CanMin, v43:1393).
Location: Domasiov nad Bystrici, Czech Republic. Scale: See Image.
© J. Sejkora / Canadian Mineralogist

Calciopetersite Crystallography

Axial Ratios:

a:c = 1:0.44429

Cell Dimensions:

a = 13.284, c = 5.902, Z = 2; V = 901.96 Den(Calc)= 3.34

Crystal System:

Hexagonal - Dipyramidal H-M Symbol (6/m) Space Group: P 6₃/m

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

By Intensity(I/I_o): 11.51(1)(100), 4.346(0.88)(210), 2.888(0.53)(221),4.14(0.46)(201), 3.321(0.44)(220), 3.837(0.38)(300), 2.51(0.37)(140), 2.877(0.37)(400), 3.184(0.35)(130),

Physical Properties of Calciopetersite

Cleavage:

None

Color:

Olive green.

Diaphaneity:

Translucent to transparent

Fracture:

Brittle - Uneven - Very brittle fracture producing uneven fragments.

Habit:

Acicular - Occurs as needle-like crystals.

Habit:

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

Hardness:

3 - Calcite

Luster:

Vitreous (Glassy)

Streak:

light olive green

Optical Properties of Calciopetersite

Gladstone-Dale:

CI calc= -0.093 (Poor) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.2124,KC= 0.1943
Ncalc = 1.65

Optical Data:

Uniaxial (+), w=1.674, e=1.739-1.75, bire=0.0650-0.0760.

Calculated Properties of Calciopetersite

Electron Density:

Bulk Density (Electron Density)=3.22 gm/cc
note: Specific Gravity of Calciopetersite =3.34 gm/cc.

Fermion Index:

Fermion Index = 0.0051010581
Boson Index = 0.9948989419

Photoelectric:

PE_{Calciopetersite}= 44.78 barns/electron
U=PE_{Calciopetersite} x r_electron= 144.13 barns/cc.

Radioactivity:

GRapi = 4,408.86 (Gamma Ray American Petroleum Institute Units)
Concentration of Calciopetersite per GRapi unit = 226.82 (PPM)

Calciopetersite is Radioactive as defined in 49 CFR 173.403. Greater than 70 Bq / gram.

**Estimated Radioactivity from Calciopetersite** - mild
Specimen Size Weight/Volume (Sphere) *	Calculated Activity Bequerols (Bq)	Calculated Activity Curies (Ci)	Estimated Activity GR(api)	Estimated Exposure (mRem**)/hr If Held in Hand For One Hour
1000 gm / 8.30 cm	96,084	2.60E-06	4,408.86	1.45
100 gm / 3.85 cm	9,608	2.60E-07	440.89	0.14
10 gm / 1.79 cm	961	2.60E-08	44.09	0.01
1 gm / 8.30 mm	96	2.60E-09	4.41	0.00
0.1 gm / 3.85 mm	10	2.60E-10	0.44	0.00
0.01 gm / 1.79 mm	1	2.60E-11	0.04	0.00
0.001 gm / 0.83 mm	0	2.60E-12	0.00	0.00

Weight of pure Calciopetersite in grams (gm) and Calculated Diameter of a Sphere with a Density of 3.34 gm/cc.*
Goverment Estimate of Average Annual Exposure ( 360 mRem) **
Note: 10 microsieverts/hr = 1 mRem/hr **
Max Permissable Adult Dose 50,000 mRem/yr (hands), 15,000 mRem/yr (eyes)
Lethal Dose LD(50) Exposure 400,000 to 500,000 mRem
Estimated Thorium Activity ( 0.21 % Th) From Sum REE Elements ( 4.29 % REE)

Calciopetersite Classification

Dana Class:

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

(42.05)where (A)2 (XO4) Zq ï¿½ x(H2O)

(42.05.02)Mixite group (Phosphate series)

42.05.02.01 Petersite-(Y) (Y,Ce,Nd,Ca)Cu6(PO4)3(OH)6•3(H2O) P 6₃/m 6/m

42.05.02.02 Calciopetersite! CaCu6[(PO4)2(PO3OH)(OH)6]•3(H2O) P 6₃/m 6/m

Strunz Class:

08.DL.15 08 - PHOSPHATES, ARSENATES, VANADATES

08.D - Phosphates, etc

08.DL -With large and medium-sized cations, (OH, etc.):RO4 = 2:1

08.DL.15 Agardite-(Dy)! (Dy,La,Ca)Cu6(AsO4)3(OH)6•3(H2O) 6/m

08.DL.15 Agardite-(Ca)! CaCu6(AsO4)3(OH)6•3(H2O) 6/m

08.DL.15 Agardite-(Ce)! (Ce,Ca)Cu6(AsO4)3(OH)6•3(H2O) P 6₃/m 6/m

08.DL.15 Agardite-(La)! (La,Ca)Cu6(AsO4)3(OH)6•3(H2O) P 6₃/m 6/m

08.DL.15 Agardite-(Nd)! (Pb,Nd,Y,La,Ca)Cu6(AsO4)3(OH)6•3(H2O) 6/m

08.DL.15 Agardite-(Y) (Y,Ca)Cu6(AsO4)3(OH)6•3(H2O) P 6₃/m 6/m

08.DL.15 Goudeyite (Al,Y)Cu6(AsO4)3(OH)6•3(H2O) Unk Hex

08.DL.15 Zalesiite! (Ca,Y)Cu6[(AsO4)2(AsO3OH)(OH)6]•3(H2O) P 6₃/m 6/m

08.DL.15 Mixite BiCu6(AsO4)3(OH)6•3(H2O) P 6₃/m 6/m

08.DL.15 Petersite-(Y) (Y,Ce,Nd,Ca)Cu6(PO4)3(OH)6•3(H2O) P 6₃/m 6/m

08.DL.15 Calciopetersite! CaCu6[(PO4)2(PO3OH)(OH)6]•3(H2O) P 6₃/m 6/m

08.DL.15 Plumboagardite! (Pb,REE,Ca)Cu6(AsO4)3(OH)6•3(H2O) P 6₃/m 6/m

Other Calciopetersite Information

References:

NAME( AmMin, v91, p710) PHYS. PROP.(AmMin, v91, p710) OPTIC PROP.(AmMin, v91, p710)

See Also:

Links to other databases for Calciopetersite :
1 - Am. Min. Crystal Structure Database
2 - Athena
3 - GeoScienceWorld
4 - Google Images
5 - Google Scholar
6 - MinDAT
7 - Mineralienatlas (Deutsch)
8 - Online Mineral Museum
9 - QUT Mineral Atlas
10 - Ruff.Info

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Calciopetersite

CaCu6[(PO4)2(PO3OH)(OH)6]•3(H2O)
Dana No: 42.05.02.02 Strunz No: 08.DL.15
Locality:

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