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Attikaite

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Formula:
Ca3Cu2Al2(AsO4)4(OH)4 · 2H2O
Colour:
light blue, greenish blue
Hardness:
2½ - 3
Specific Gravity:
3.2
Crystal System:
Orthorhombic
Name:
Named for the old Greek region of Attika and the Attiki Prefecture, respectively, in which the Lavrion District is situated.
This page provides mineralogical data about Attikaite.


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Classification of AttikaiteHide

Approved
Approval Year:
2006
8.DJ.45

8 : PHOSPHATES, ARSENATES, VANADATES
D : Phosphates, etc. with additional anions, with H2O
J : With large and medium-sized cations, (OH, etc.):RO4 = 1:1
42.9.10.

42 : HYDRATED PHOSPHATES, ETC.CONTAINING HYDROXYL OR HALOGEN
9 : (AB)7(XO4)4Zq·xH2O

Physical Properties of AttikaiteHide

Colour:
light blue, greenish blue
Streak:
pale blue
Hardness:
2½ - 3 on Mohs scale
Hardness Data:
Measured
Cleavage:
Perfect
mica-like on {001}
Density:
3.2(2) g/cm3 (Measured)    
Comment:
by heavy liquids

Optical Data of AttikaiteHide

Type:
Biaxial (-)
RI values:
nα = 1.642(2) nβ = 1.644(2) nγ = 1.644(2)
2V:
Measured: 10° (8)
Max Birefringence:
δ = 0.002
Image shows birefringence interference colour range (at 30µm thickness)
and does not take into account mineral colouration.
Surface Relief:
Moderate

Chemical Properties of AttikaiteHide

Formula:
Ca3Cu2Al2(AsO4)4(OH)4 · 2H2O

Crystallography of AttikaiteHide

Crystal System:
Orthorhombic
Class (H-M):
mmm (2/m 2/m 2/m) - Dipyramidal
Space Group:
Pban
Cell Parameters:
a = 10.01 Å, b = 8.199 Å, c = 22.78 Å
Ratio:
a:b:c = 1.221 : 1 : 2.778
Unit Cell V:
1,869.60 ų (Calculated from Unit Cell)

X-Ray Powder DiffractionHide

Powder Diffraction Data:
d-spacingIntensity
22.8 (100)
11.36 (60)
5.01 (90)
2.780 (70)
2.682 (30)
2.503 (50)
2.292 (20)

Type Occurrence of AttikaiteHide

General Appearance of Type Material:
sparsely scattered, minute botryoids of pale green aggregates, comprised of submicroscopic, intergrown needles
Place of Conservation of Type Material:
Fersman Mineralogical Museum of the Russian Academy of Science, Moscow, Russia, Catalog no. 3435/1.
Associated Minerals at Type Locality:

Synonyms of AttikaiteHide

Other Language Names for AttikaiteHide

German:Attikait

Related Minerals - Nickel-Strunz GroupingHide

8.DJ.05JohnwalkiteK(Mn2+,Fe2+,Fe3+)2(Nb5+,Ta5+)(PO4)2O2 · 2(H2O,OH)Orth.
8.DJ.05OlmsteaditeKFe2+2(Nb5+,Ta5+)(PO4)2O2 · 2H2OOrth.
8.DJ.10GatumbaiteCaAl2(PO4)2(OH)2 · H2OMon. 2/m : P2/m
8.DJ.15CamgasiteCaMg(AsO4)(OH) · 5H2OMon. 2/m : P21/m
8.DJ.20Phosphofibrite(H2O,K)3.5Fe8(PO4)6(OH)7 · 5H2OMon. 2/m
8.DJ.20Meurigite-KKFe3+8(PO4)6(OH)7 · 6.5H2OMon. 2/m : B2/b
8.DJ.20Meurigite-NaNaFe3+8(PO4)6(OH)7 · 6.5H2OMon. 2/m : B2/b
8.DJ.25JungiteCa2Zn4Fe3+8(PO4)9(OH)9 · 16H2OOrth.
8.DJ.30WycheproofiteNaAlZr(PO4)2(OH) · H2OTric.
8.DJ.35ErcititeNa2Mn3+2(PO4)2(OH)2 · 4H2OMon.
8.DJ.40MrázekiteBi2Cu3(PO4)2O2(OH)2 · H2OMon. 2/m

Other InformationHide

Health Risks:
No information on health risks for this material has been entered into the database. You should always treat mineral specimens with care.

References for AttikaiteHide

Reference List:
Sort by Year (asc) | by Year (desc) | by Author (A-Z) | by Author (Z-A)
Chukanov, N.V., Pekov, I.V., Zadov, A.E. (2007): Attikaite, Ca3Cu2Al2(AsO4)4(OH)4•2H2O, a new mineral. Proceedings of the Russian Mineralogical Society (Zapiski RMO), 136(2), 17-24. [American Mineralogist 94,1076 (2009)(abstract)]
Chukanov, N.V., Pekov, I.V., Zadov, A.E. (2007): Attikaite, Ca3Cu2Al2(AsO4)4(OH)4•2H2O, a new mineral species. Geology of Ore Deposits, 49(8), 720-726. [ENGLISH TRANSLATION]

Internet Links for AttikaiteHide

Localities for AttikaiteHide

This map shows a selection of localities that have latitude and longitude coordinates recorded. Click on the symbol to view information about a locality. The symbol next to localities in the list can be used to jump to that position on the map.

Locality ListHide

- This locality has map coordinates listed. - This locality has estimated coordinates. ⓘ - Click for further information on this occurrence. ? - Indicates mineral may be doubtful at this locality. - Good crystals or important locality for species. - World class for species or very significant. (TL) - Type Locality for a valid mineral species. (FRL) - First Recorded Locality for everything else (eg varieties). Struck out - Mineral was erroneously reported from this locality. Faded * - Never found at this locality but inferred to have existed at some point in the past (eg from pseudomorphs.)

All localities listed without proper references should be considered as questionable.
Greece
 
  • Attikí Prefecture (Attica; Attika)
    • Lavrion District (Laurion; Laurium)
      • Lavrion District Mines
        • Agios Konstantinos [St Constantine] (Kamariza)
          • Kamariza Mines (Kamareza Mines)
ZRMO 136(2),17-24(2007)
N. V. Chukanov, I. V. Pekov and A. E. Zadov (2007) Attikaite, Ca3Cu2Al2(AsO4)4(OH)4 · 2H2O, a new mineral species Geology of Ore Deposits 49: 720-726
Spain
 
  • Valencian Community
    • Castellón
Mineralogía de la concesión San Rafael, Villahermosa del Río, Castellón, España
        • San Rafael claim
- Cócera, H., Menor-Salván, C. and Muñoz-Alvarado, R. (2010): Mineralogía de la concesión San Rafael, Villahermosa del Río, Castellón, España. Acopios, 1, 1-51. [http://mti-acopios.blogspot.com/ ; http://issuu.com/malacate/docs/acopios-1-1?mode=a_p]
Mineral and/or Locality  
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