Cattiite
A valid IMA mineral species
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About Cattiite
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.
Unique Identifiers
Mindat ID:
11456
Long-form identifier:
mindat:1:1:11456:7
GUID
(UUID V4):
(UUID V4):
eb221a12-653a-4071-a257-672aa6b6d1cc
IMA Classification of Cattiite
Classification of Cattiite
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
8 : PHOSPHATES, ARSENATES, VANADATES
C : Phosphates without additional anions, with H2O
E : With only medium-sized cations, RO4:H2O about 1:2.5
Mineral Symbols
As of 2021 there are now IMA–CNMNC approved mineral symbols (abbreviations) for each mineral species, useful for tables and diagrams.
Symbol | Source | Reference |
---|---|---|
Ctt | IMA–CNMNC | Warr, L.N. (2021). IMA–CNMNC approved mineral symbols. Mineralogical Magazine, 85(3), 291-320. doi:10.1180/mgm.2021.43 |
Physical Properties of Cattiite
Adamantine, Pearly
Transparency:
Transparent
Colour:
Colourless
Streak:
White
Hardness:
2 on Mohs scale
Hardness Data:
Measured
Cleavage:
Perfect
(001)
(001)
Fracture:
Irregular/Uneven
Density:
1.65 g/cm3 (Measured) 1.64 g/cm3 (Calculated)
Optical Data of Cattiite
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.
and does not take into account mineral colouration.
Surface Relief:
Moderate
Pleochroism:
Non-pleochroic
Chemistry of Cattiite
Mindat Formula:
Mg3(PO4)2 · 22H2O
Elements listed:
Crystallography of Cattiite
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°
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
Crystal Structure
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Data courtesy of the American Mineralogist Crystal Structure Database. Click on an AMCSD ID to view structure
ID | Species | Reference | Link | Year | Locality | Pressure (GPa) | Temp (K) |
---|---|---|---|---|---|---|---|
0010835 | Cattiite | Catti M, Franchini-Angela M, Ivaldi G (1981) A case of polytypism in hydrated oxysalts: the crystal structure of Mg3(PO4)2*22H2O-II Zeitschrift fur Kristallographie 155 53-64 | 1981 | synthetic | 0 | 293 |
CIF Raw Data - click here to close
X-Ray Powder Diffraction
Powder Diffraction Data:
d-spacing | Intensity |
---|---|
7.98 Å | (100) |
5.32 Å | (63) |
3.19 Å | (45) |
2.658 Å | (37) |
2.896 Å | (33) |
2.728 Å | (32) |
2.867 Å | (30) |
Geological Environment
Paragenetic Mode(s):
Paragenetic Mode | Earliest Age (Ga) |
---|---|
Stage 4b: Highly evolved igneous rocks | >3.0 |
36 : Carbonatites, kimberlites, and related igneous rocks | |
Stage 7: Great Oxidation Event | <2.4 |
47a : [Near-surface hydration of prior minerals] | |
47c : [Carbonates, phosphates, borates, nitrates] | |
Stage 10b: Anthropogenic minerals | <10 Ka |
55 : Anthropogenic mine minerals |
Type Occurrence of Cattiite
General Appearance of Type Material:
Small massive aggregates and very small crystals.
Place of Conservation of Type Material:
Mineralogical Museum, Department of Mineralogy, Saint Petersburg State University, Saint Petersburg, Russia.
Geological Setting of Type Material:
In a vein of dolomite carbonatite in forsterite-magnetite ore.
Associated Minerals at Type Locality:
Synonyms of Cattiite
Other Language Names for Cattiite
Related Minerals - Strunz-mindat Grouping
8.CE.X | Babánekite | Cu3(AsO4)2 · 8H2O |
8.CE. | Monteneroite | Cu2+Mn2+2(AsO4)2 · 8H2O |
8.CE.05 | Chudobaite | (Mg,Zn)5(AsO4)2(HAsO4)2 · 10H2O |
8.CE.05 | Geigerite | Mn2+5(AsO4)2(HAsO4)2 · 10H2O |
8.CE.10 | Newberyite | Mg(PO3OH) · 3H2O |
8.CE.15 | Brassite | Mg(HAsO4) · 4H2O |
8.CE.20 | Phosphorrösslerite | Mg(PO3OH) · 7H2O |
8.CE.20 | Rösslerite | Mg(HAsO4) · 7H2O |
8.CE.25 | Metaswitzerite | Mn2+3(PO4)2 · 4H2O |
8.CE.25 | Switzerite | Mn2+3(PO4)2 · 7H2O |
8.CE.30 | Lindackerite | CuCu4(AsO4)2(HAsO4)2 · 9H2O |
8.CE.30 | Ondrušite | CaCu4(AsO4)2(HAsO4)2 · 10H2O |
8.CE.30 | Veselovskýite | ZnCu4(AsO4)2(HAsO4)2 · 9H2O |
8.CE.30 | Pradetite | CoCu4(AsO4)2(HAsO4)2 · 9H2O |
8.CE.30 | Klajite | MnCu4(AsO4)2(HAsO4)2 · 9-10H2O |
8.CE.30 | Hloušekite | (Ni,Co)Cu4(AsO4)2(AsO3OH)2 · 9H2O |
8.CE.35 | Bobierrite | Mg3(PO4)2 · 8H2O |
8.CE.40 | Annabergite | Ni3(AsO4)2 · 8H2O |
8.CE.40 | Arupite | Ni3(PO4)2 · 8H2O |
8.CE.40 | Barićite | (Mg,Fe)3(PO4)2 · 8H2O |
8.CE.40 | Erythrite | Co3(AsO4)2 · 8H2O |
8.CE.40 | Ferrisymplesite | Fe3+3(AsO4)2(OH)3 · 5H2O |
8.CE.40 | Hörnesite | Mg3(AsO4)2 · 8H2O |
8.CE.40 | Köttigite | Zn3(AsO4)2 · 8H2O |
8.CE.40 | Manganohörnesite | Mn2+3(AsO4)2 · 8H2O |
8.CE.40 | Parasymplesite | Fe2+3(AsO4)2 · 8H2O |
8.CE.40 | Vivianite | Fe2+Fe2+2(PO4)2 · 8H2O |
8.CE.40 | Pakhomovskyite | Co3(PO4)2 · 8H2O |
8.CE.45 | Symplesite | Fe2+3(AsO4)2 · 8H2O |
8.CE.55 | Koninckite | Fe3+PO4 · 3H2O |
8.CE.60 | Kaňkite | FeAsO4 · 3.5H2O |
8.CE.60 | Hilarionite | Fe3+2(SO4)(AsO4)(OH) · 6H2O |
8.CE.65 | Steigerite | Al(VO4) · 3H2O |
8.CE.70 | Metaschoderite | Al2(PO4)(VO4) · 6H2O |
8.CE.70 | Schoderite | Al2(PO4)(VO4) · 8H2O |
8.CE.75 | Malhmoodite | FeZr(PO4)2 · 4H2O |
8.CE.75 | Zigrasite | MgZr(PO4)2 · 4H2O |
8.CE.75 | UM2009-11-PO:CaHZr | CaZr[PO4]2 · 4H2O |
8.CE.80 | Santabarbaraite | Fe3+3(PO4)2(OH)3 · 5H2O |
8.CE.85 | Metaköttigite | (Zn,Fe,Fe)3(AsO4)2 · 8(H2O,OH) |
8.CE.90 | Slavkovite | Cu13(AsO4)6(AsO3OH)4 · 23H2O |
Other Information
Health Risks:
No information on health risks for this material has been entered into the database. You should always treat mineral specimens with care.
Internet Links for Cattiite
mindat.org URL:
https://www.mindat.org/min-11456.html
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References for Cattiite
Reference List:
Localities for Cattiite
Locality List
- This locality has map coordinates listed.
- This locality has estimated coordinates.
ⓘ - Click for references and 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 (e.g. from pseudomorphs).
All localities listed without proper references should be considered as questionable.
All localities listed without proper references should be considered as questionable.
Russia (TL) | |
| |
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Kovdor Zheleznyi Mine, Kovdor Massif, Murmansk Oblast, Russia