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Ramazzoite

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About RamazzoiteHide

Formula:
[Mg8Cu12(PO4)(CO3)4(OH)24(H2O)20][(H0.33SO4)3(H2O)36]
Colour:
Blue to greenish-blue
Lustre:
Vitreous
Hardness:
Specific Gravity:
1.98
Crystal System:
Isometric
New structure type. The first mineral with a polyoxometalate cation. Unique combination of elements (Mg-Cu-P-C-(S)).


Classification of RamazzoiteHide

Approved
Approval Year:
2017
First Published:
2018
Approval History:
2017-090

Physical Properties of RamazzoiteHide

Vitreous
Comment:
Vitreous to oily
Colour:
Blue to greenish-blue
Streak:
Pale blue
Hardness:
2½ on Mohs scale
Tenacity:
Brittle
Cleavage:
Perfect
{100}
Fracture:
Conchoidal
Density:
1.98(1) g/cm3 (Measured)    

Optical Data of RamazzoiteHide

Type:
Isotropic

Chemical Properties of RamazzoiteHide

Formula:
[Mg8Cu12(PO4)(CO3)4(OH)24(H2O)20][(H0.33SO4)3(H2O)36]
IMA Formula:
[Mg8Cu12(PO4)(CO3)4(OH)24(H2O)20][(H0.33SO4)3(H2O)36]

Chemical AnalysisHide

Empirical formulas:
Sample IDEmpirical Formula
1 [(Mg8.00)(Cu8.00Mg3.78)(PO4)(CO3)4(OH)24(H2O)20] [(H0.65S1.01O4)3(H2O)36]

Crystallography of RamazzoiteHide

Crystal System:
Isometric
Class (H-M):
4 3m - Hextetrahedral
Space Group:
P4 3m
Cell Parameters:
a = 13.3887(10) Å
Unit Cell V:
2400 ų
Z:
1
Morphology:
Cubes

X-Ray Powder DiffractionHide

Powder Diffraction Data:
d-spacingIntensity
13.37Å(10)
9.43Å(24)
4.224Å(8)
4.043Å(11)
3.252Å(9)
2.857Å(9)
2.730Å(5)
2.668Å(5)

Type Occurrence of RamazzoiteHide

General Appearance of Type Material:
Cubes to 0.15mm on edge
Place of Conservation of Type Material:
Cotype material is deposited in the mineralogical collections of the Natural History Museum of Los Angeles County, 900 Exposition Boulevard, Los Angeles, CA 90007, USA, catalogue numbers 66691 and 66692
Associated Minerals at Type Locality:
Reference:
Kampf, A.R., Rossman, G.R., Ma, C., Belmonte, D., Biagioni, C., Castellaro, F., Chiappino, L. (2018) Ramazzoite, [Mg8Cu12(PO4)(CO3)4(OH)24(H2O)20][(H0.33SO4)3(H2O)36], the first mineral with a polyoxometalate cation. European Journal of Mineralogy: 30: 827–834.

Synonyms of RamazzoiteHide

Other InformationHide

Notes:
Soluble with mild effervescence in dilute HCl at room temperature
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 RamazzoiteHide

Reference List:
Sort by Year (asc) | by Year (desc) | by Author (A-Z) | by Author (Z-A)
Kampf, A.R., Rossman, G.R., Ma, C., Belmonte, D., Biagioni, C., Castellaro, F. and Chiappino, L. (2018) Ramazzoite, IMA 2017-090; CNMNC Newsletter No. 41, February 2018, page 184; European Journal of Mineralogy: 30: 183-186
Kampf, A.R., Rossman, G.R., Ma, C., Belmonte, D., Biagioni, C., Castellaro, F., Chiappino, L. (2018) Ramazzoite, [Mg8Cu12(PO4)(CO3)4(OH)24(H2O)20][(H0.33SO4)3(H2O)36], the first mineral with a polyoxometalate cation. European Journal of Mineralogy: 30: 827–834.

Internet Links for RamazzoiteHide

Localities for RamazzoiteHide

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.
Italy (TL)
 
  • Liguria
    • Genoa
      • Genoa
        • Borzoli
Kampf, A.R., Rossman, G.R., Ma, C., Belmonte, D., Biagioni, C., Castellaro, F. and Chiappino, L. (2018) Ramazzoite, IMA 2017-090; CNMNC Newsletter No. 41, February 2018, page 184; European Journal of Mineralogy: 30: 183-186; Kampf, A.R., Rossman, G.R., Ma, C., Belmonte, D., Biagioni, C., Castellaro, F., Chiappino, L. (2018) Ramazzoite, [Mg8Cu12(PO4)(CO3)4(OH)24(H2O)20][(H0.33SO4)3(H2O)36], the first mineral with a polyoxometalate cation. European Journal of Mineralogy: 30: 827–834.
 
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