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Calciopetersite

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Domašov nad Bystřicí, Sternberk (Sternberg), Olomouc Region, Moravia (Mähren; Maehren), Czech Republic
© Brent Thorne

Show Calciopetersite Photos (3)
Formula:
CaCu
 
6
[(OH)
 
6
|HPO
 
4
|(PO
 
4
)
 
2
] · 3H
 
2
O
System:HexagonalColour:Olive green
Name:For the chemical composition and its relationship with Petersite.


The phosphate analogue of zálesíite, and the Ca analogue of petersite-(Y).

Classification of Calciopetersite

IMA status:Approved 2001
Strunz 8th edition ID:7/D.53-05
Nickel-Strunz 10th (pending) edition ID:8.DL.15

8 : PHOSPHATES, ARSENATES, VANADATES
D : Phosphates, etc. with additional anions, with H2O
L : With large and medium-sized cations, (OH, etc.):RO4 = 2:1
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Type Occurrence of Calciopetersite

Type Locality:Domašov nad Bystřicí, Sternberk (Sternberg), Olomouc Region, Moravia (Mähren; Maehren), Czech Republic
General Appearance of Type Material:minute acicular crystals with a hexagonal outline, up to 0.4 mm in length and 5–20 µm in width, clustered in fine radiating sprays up to 0.1 × 0.5 mm in size
Geological Setting of type material:cavities in weathered, copper sulphide bearing quartz veins
Associated Minerals at type locality:
QuartzPyriteMalachiteLepidocrociteGoethite
CovelliteChrysocollaChalcopyriteChalcociteAllophane

Physical Properties of Calciopetersite

Lustre:Vitreous
Colour:Olive green
Streak:Light olive green
Tenacity:Brittle
Cleavage:None Observed
Fracture:Irregular/Uneven
Density (calculated):3.332 g/cm3

Crystallography of Calciopetersite

Crystal System:Hexagonal
Class (H-M):6/m - Dipyramidal
Space Group:P63/m
Cell Parameters:a = 13.284Å, c = 5.902Å
Ratio:a:c = 1 : 0.444
Unit Cell Volume:V 902 ų
Z:2
X-Ray Powder Diffraction:
d-spacingIntensity
11.51 (100)
4.346 (88)
4.140 (46)
3.837 (38)
3.321 (44)
2.888 (53)
2.877 (37)
Comments:Format: d/Å I/% (hkl)

Optical Data of Calciopetersite

Type:Uniaxial (+)
RI values: nω = 1.674 nε = 1.750
Maximum Birefringence:δ = 0.076

Chart shows birefringence interference colour range (at 30µm thickness) and does not take into account mineral colouration.
Surface Relief:High
Comments:O light green with yellowish tint, E green

Chemical Properties of Calciopetersite

Formula:
CaCu
 
6
[(OH)
 
6
|HPO
 
4
|(PO
 
4
)
 
2
] · 3H
 
2
O
All elements listed in formula:Ca, Cu, H, O, P
Analyical Data:Empirical formula based on 21 atoms per formula unit
K2O (0.09)
CaO (4.39)
CuO  (51.25)
Y2O3 (1.61)
La2O3 (0.64)
Ce2O3 (1.98)
Pr2O3 (0.25)
Nd2O3 (1.40)
Dy2O3 (0.33)
Yb2O3 (0.21)
Bi2O3 (0.09)
SiO2 (0.52)
P2O5 (20.98)
As2O5 (2.70)
H2O (12.45)

total 98.89 wt.%
Empirical Formula:
(Ca
 
0.58
Y
 
0.13
Ce
 
0.11
Nd
 
0.08
La
 
0.04
K
 
0.02
Dy
 
0.02
Pr
 
0.01
Yb
 
0.01
)Σ1.00 (Cu
 
5.90
Ca
 
0.14
)Σ6.04 [(PO
 
4
)
 
2.06
(HPO
 
4
)
 
0.65
(AsO
 
4
)
 
0.22
(SiO
 
4
)
 
0.22
(OH)
 
6
] · 3.00H
 
2
O

Relationship of Calciopetersite to other Species

Related to:
  • Mixite Group
    • Related Minerals - Nickel-Strunz Grouping):

    - +
    8.DL.05Foggite
    CaAl[(OH)
     
    2
    		|PO
     
    4
    		] · H
     
    2
    		O
    8.DL.10Cyrilovite
    NaFe
    3+
    3
    		[(OH)
     
    2
    		|PO
     
    4
    		]
     
    2
    		 · 2H
     
    2
    		O
    8.DL.10Millisite
    (Na,K)CaAl
     
    6
    		[(OH)
     
    9
    		|(PO
     
    4
    		)
     
    4
    		] · 3H
     
    2
    		O
    8.DL.10Wardite
    NaAl
     
    3
    		[(OH)
     
    2
    		|PO
     
    4
    		]
     
    2
    		 · 2H
     
    2
    		O
    8.DL.15Agardite-(Nd)
    (Nd,La,Ce)Cu
     
    6
    		[(OH)
     
    6
    		|(AsO
     
    4
    		)
     
    3
    		] · 3H
     
    2
    		O
    8.DL.15Agardite-(Y)
    (Y,Ca)Cu
     
    6
    		[(OH)
     
    6
    		|(AsO
     
    4
    		,HAsO
     
    4
    		)|(AsO
     
    4
    		)
     
    2
    		] · 3H
     
    2
    		O
    8.DL.15Agardite-(Ce)
    CeCu
     
    6
    		[(OH)
     
    6
    		|(AsO
     
    4
    		)
     
    3
    		] · 3H
     
    2
    		O
    8.DL.15Agardite-(La)
    (La,Ce)Cu
     
    6
    		[(OH)
     
    6
    		|(AsO
     
    4
    		)
     
    3
    		] · 3H
     
    2
    		O
    8.DL.15Goudeyite
    (Al,Y)Cu
     
    6
    		[(OH)
     
    6
    		|(AsO
     
    4
    		)
     
    3
    		] · 3H
     
    2
    		O
    8.DL.15Mixite
    BiCu
     
    6
    		[(OH)
     
    6
    		|(AsO
     
    4
    		)
     
    3
    		] · 3H
     
    2
    		O
    8.DL.15Petersite-(Y)
    (Y,Ce,Nd)Cu
     
    6
    		[(OH)
     
    6
    		|(PO
     
    4
    		)
     
    3
    		] · 3H
     
    2
    		O
    8.DL.15Zálesíite
    (Ca,Y)Cu
     
    6
    		[(OH)
     
    6
    		|(HAsO
     
    4
    		,AsO
     
    4
    		)|(AsO
     
    4
    		)
     
    2
    		] · 3H
     
    2
    		O
    8.DL.15Plumboagardite
    (Pb,REE,Ca)Cu
     
    6
    		[(OH)
     
    6
    		|(HAsO
     
    4
    		,AsO
     
    4
    		)|(AsO
     
    4
    		)
     
    2
    		] · 3H
     
    2
    		O
    8.DL.20Cheremnykhite
    Pb
     
    3
    		Zn
     
    3
    		TeO
     
    6
    		(VO
     
    4
    		)
     
    2
    8.DL.20Dugganite
    Pb
     
    3
    		Zn
     
    3
    		(Te
    6+
     
    		O
     
    6
    		)(AsO
     
    4
    		)
     
    2
    8.DL.20Kuksite
    Pb
     
    3
    		Zn
     
    3
    		TeO
     
    6
    		(PO
     
    4
    		)
     
    2
    8.DL.20Wallkilldellite-(Mn)
    Ca
     
    2
    		Mn
    2+
    3
    		[(OH)
     
    2
    		|AsO
     
    4
    		]
     
    2
    		 · 9H
     
    2
    		O
    8.DL.20Wallkilldellite-(Fe)
    (Ca,Cu)
     
    4
    		Fe
    2+
    6
    		[(OH,O)
     
    2
    		|(AsO
     
    4
    		,SiO
     
    4
    		)]
     
    4
    		 · 18H
     
    2
    		O
    8.DL.20Wallkilldellite

    Other Names for Calciopetersite

    Synonyms:
    IMA2001-004
    Other Languages:

    Other Information

    Fluorescence in UV light:none
    Health Warning:No information on health risks for this material has been entered into the database. You should always treat mineral specimens with care.

    References for Calciopetersite

    Reference List:Kolitsch, Uwe (1997): Das Ca-Analogon von Petersit und einige weitere Neufunde aus dem sächsisch-böhmischen Erzgebirge und dem Vogtland. Mineralien-Welt 8 (4), 17-20.

    Sejkora, J., Novotný, P., Novák, M., Šrein, V., Berlepsch, P. (2005): Calciopetersite from Domašov nad Bystricí, northern Moravia, Czech Republic, a new mineral species of the mixite group. Canadian Mineralogist, 43, 1393-1400.

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    Localities for Calciopetersite

    (TL) indicates type locality. ? indicates mineral may be doubtful at this locality. All other localities listed without reference should be considered as uncertain and unproven until references can be found.
    Czech Republic
     
    • Moravia (Mähren; Maehren)
      • Olomouc Region
        • Sternberk (Sternberg)
    		J. Sejkora et al.: Can. Min. 43:1393-1400 (2005)
    Germany
     
    • Saxony
      • Erzgebirge
        • Clausnitz - Sayda District
          • Sayda
    		Kolitsch, U. (1997): Das Ca-Analogon von Petersit und einige weitere Neufunde aus dem sächsisch-böhmischen Erzgebirge und dem Vogtland. Mineralien-Welt 8 (4), 17-20.
    Mineral and/or Locality
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