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Cattiite

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Formula:
Mg3(PO4)2 · 22H2O
Colour:
colourless
Lustre:
Adamantine, Pearly
Hardness:
2
Specific Gravity:
1.65
Crystal System:
Triclinic
Name:
Named in honor of Michele Catti (1945 - ), Italian Professor of Physical Chemistry, University of Milano Bicocca.
This page provides mineralogical data about Cattiite.


Hide all sections | Show all sections

Classification of CattiiteHide

Approved
Approval Year:
2000
8.CE.50

8 : PHOSPHATES, ARSENATES, VANADATES
C : Phosphates without additional anions, with H2O
E : With only medium-sized cations, RO4:H2O about 1:2.5

Physical Properties of CattiiteHide

Adamantine, Pearly
Transparency:
Transparent
Colour:
colourless
Streak:
white
Hardness:
Hardness Data:
Measured
Cleavage:
Perfect
(001)
Fracture:
Irregular/Uneven
Density:
1.65 g/cm3 (Measured)    1.64 g/cm3 (Calculated)

Optical Data of CattiiteHide

Type:
Biaxial (-)
RI values:
nα = 1.459 nβ = 1.470 nγ = 1.470
Max Birefringence:
δ = 0.011
Image shows birefringence interference colour range (at 30µm thickness)
and does not take into account mineral colouration.
Surface Relief:
Moderate
Pleochroism:
Non-pleochroic

Chemical Properties of CattiiteHide

Formula:
Mg3(PO4)2 · 22H2O

Crystallography of CattiiteHide

Crystal System:
Triclinic
Class (H-M):
1 - Pinacoidal
Space Group:
P1
Cell Parameters:
a = 6.932 Å, b = 6.925 Å, c = 16.154 Å
α = 82.21°, β = 89.7°, γ = 119.51°
Ratio:
a:b:c = 1.001 : 1 : 2.333
Unit Cell V:
666.3 ų
Z:
1

Type Occurrence of CattiiteHide

General Appearance of Type Material:
small massive aggregates and very small crystals
Geological Setting of Type Material:
in a vein of dolomite carbonatite in forsterite-magnetite ore

Synonyms of CattiiteHide

Other Language Names for CattiiteHide

German:Cattiit
Simplified Chinese:卡水磷镁石
Spanish:Cattiita
Traditional Chinese:卡水磷鎂石

Related Minerals - Nickel-Strunz GroupingHide

8.CE.XBabánekiteCu3(AsO4)2 · 8H2O Mon. 2/m : B2/m
8.CE.05Chudobaite(Mg,Zn)5(AsO4)2(HAsO4)2 · 10H2OTric.
8.CE.05GeigeriteMn2+5(AsO4)2(HAsO4)2 · 10H2OTric.
8.CE.10NewberyiteMg(HPO4) · 3H2OOrth. mmm (2/m 2/m 2/m) : Pbca
8.CE.15BrassiteMg(HAsO4) · 4H2OOrth. mmm (2/m 2/m 2/m) : Pbca
8.CE.20PhosphorrössleriteMg(HPO4) · 7H2OMon. 2/m : P2/b
8.CE.20RößleriteMg(HAsO4) · 7H2OMon. 2/m : B2/b
8.CE.25MetaswitzeriteMn3(PO4)2 · 4H2OMon. 2/m : P2/b
8.CE.25Switzerite(Mn,Fe)3(PO4)2 · 7H2OMon.
8.CE.30LindackeriteCuCu4(AsO4)2(HAsO4)2 · 9H2OTric. 1 : P1
8.CE.30OndrušiteCaCu4(AsO4)2(HAsO4)2 · 10H2OTric. 1 : P1
8.CE.30VeselovskýiteZnCu4(AsO4)2(HAsO4)2 · 9H2OTric. 1 : P1
8.CE.30PradetiteCoCu4(AsO4)2(HAsO4)2 · 9H2OTric. 1 : P1
8.CE.30KlajiteMnCu4(AsO4)2(HAsO4)2 · 9-10H2OTric. 1 : P1
8.CE.35BobierriteMg3(PO4)2 · 8H2OMon. 2/m : B2/b
8.CE.40AnnabergiteNi3(AsO4)2 · 8H2OMon. 2/m : B2/m
8.CE.40ArupiteNi3(PO4)2 · 8H2OMon. 2/m : B2/m
8.CE.40Barićite(Mg,Fe)3(PO4)2 · 8H2OMon. 2/m : B2/m
8.CE.40ErythriteCo3(AsO4)2 · 8H2OMon. 2/m : B2/m
8.CE.40FerrisymplesiteFe3+3(AsO4)2(OH)3 · 5H2OMon.
8.CE.40HörnesiteMg3(AsO4)2 · 8H2OMon. 2/m : B2/m
8.CE.40KöttigiteZn3(AsO4)2 · 8H2OMon. 2/m : B2/m
8.CE.40Manganohörnesite(Mn,Mg)3(AsO4)2 · 8H2OMon. 2/m : P2/m
8.CE.40ParasymplesiteFe2+3(AsO4)2 · 8H2OMon. 2/m : B2/m
8.CE.40VivianiteFe2+3(PO4)2 · 8H2OMon. 2/m : B2/m
8.CE.40PakhomovskyiteCo3(PO4)2 · 8H2OMon. 2/m : B2/m
8.CE.45SymplesiteFe2+3(AsO4)2 · 8H2OTric. 1 : P1
8.CE.55KoninckiteFe3+PO4 · 3H2OTet.
8.CE.60KaňkiteFeAsO4 · 3.5H2OMon.
8.CE.65SteigeriteAl(VO4) · 3H2OMon. 2/m : P21/m
8.CE.70MetaschoderiteAl2(PO4)(VO4) · 6H2OMon. 2/m : P2/m
8.CE.70SchoderiteAl2(PO4)(VO4) · 8H2OMon.
8.CE.75MalhmooditeFeZr(PO4)2 · 4H2OMon.
8.CE.75ZigrasiteMgZr(PO4)2 · 4H2OTric. 1 : P1
8.CE.75Unnamed (Ca-analogue of Zigrasite)CaZr[PO4]2 · 4H2OTric.
8.CE.80SantabarbaraiteFe3+3(PO4)2(OH)3 · 5H2OAmor.
8.CE.85Metaköttigite(Zn,Fe,Fe)3(AsO4)2 · 8(H2O,OH)Tric. 1 : P1

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 CattiiteHide

Reference List:
Sort by Year (asc) | by Year (desc) | by Author (A-Z) | by Author (Z-A)
Britvin, S.N., G. Ferraris, G. Ivaldi, A.N. Bogdanova & N.V. Chukanov (2002) Cattiite, Mg3(PO4)2·22H2O, a new mineral from Zhelezny mine (Kovdor Massif, Kola Peninsula, Russia). Neues Jahrbuch für Mineralogie, Monatshefte 2002: 160-168.
Zeitschrift für Kristallographie: 155: 53-64.

Internet Links for CattiiteHide

Localities for CattiiteHide

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.
Australia
 
  • Western Australia
    • Ashburton Shire
      • Ashburton Downs Station
Handbook of Mineralogy
Chile
 
  • Antofagasta Region
    • Antofagasta Province
      • Santa Catalina
        • Guanaco (Huanaco)
Handbook of Mineralogy
France
 
  • Provence-Alpes-Côte d'Azur
    • Var
      • Le Pradet
Handbook of Mineralogy
Namibia
 
  • Otjikoto Region (Oshikoto)
Handbook of Mineralogy
Russia (TL)
 
  • Northern Region
    • Murmanskaya Oblast'
      • Kovdor Massif
S.N. Britvin, G. Ferraris, G. Ivaldi, A.N. Bogdanova & N.V. Chukanov (2002), Neues Jahrbuch für Mineralogie, Monatshefte 2002: 160-168.
UK
 
  • England
    • Cornwall
      • Gwennap CP
        • Redruth
          • St Day
Handbook of Mineralogy
      • Mount's Bay District
        • St Hilary
http://webcache.googleusercontent.com/search?q=cache:8rDhWIquacQJ:rruff.info/doclib/hom/cattiite.pdf+penberthy+croft+mine&cd=48&hl=en&ct=clnk&gl=uk
      • St Day
Handbook of Mineralogy
Mineral and/or Locality  
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