Zanazziite (original) (raw)
A valid IMA mineral species
About ZanazziiteHide
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Formula:
Ca2Mg5Be4(PO4)6(OH)4 · 6H2O
The formula given above is the idealised formula. The type description and Mandarino (1997) writes the formula as Ca2(Mg,Fe3+)(Mg,Fe2+, Al)Be4Mg5(PO4)6(OH)4.6H2O
Colour:
Pale to dark olive-green
Crystal System:
Monoclinic
Name:
Named by Peter B. Leavens, John S. White, and John A. Nelen in 1990 in honour of Pier Francesco Zanazzi (30 April 1939, Gorizia, Friuli-Venezia Giulia, Italy), crystallographer and Professor of Mineralogy at the University of Perugia (Italy).
Unique IdentifiersHide
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Long-form identifier:
mindat:1:1:4385:0
15dcc848-9e48-4f1f-869c-25bd9fd5ee67
IMA Classification of ZanazziiteHide
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IMA Formula:
Ca2Be4Mg5(PO4)6(OH)4 · 6H2O
Type description reference:
Classification of ZanazziiteHide
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8.DA.10
8 : PHOSPHATES, ARSENATES, VANADATES
D : Phosphates, etc. with additional anions, with H2O
A : With small (and occasionally larger) cations
42.7.7.3
42 : HYDRATED PHOSPHATES, ETC.CONTAINING HYDROXYL OR HALOGEN
7 : (AB)2(XO4)Zq·xH2O
19.12.64
19 : Phosphates
12 : Phosphates of Mn
Mineral SymbolsHide
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As of 2021 there are now IMA–CNMNC approved mineral symbols (abbreviations) for each mineral species, useful for tables and diagrams.
| Symbol | Source | Reference |
|---|---|---|
| Zan | 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 ZanazziiteHide
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Comment:
Pearly on cleavages
Colour:
Pale to dark olive-green
Cleavage:
Distinct/Good
Good on {100}
Distinct on {010}
Density:
2.76 g/cm3 (Measured) 2.77 g/cm3 (Calculated)
Optical Data of ZanazziiteHide
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RI values:
_n_α = 1.606(2) _n_β = 1.610 _n_γ = 1.620
2V:
Measured: 72° , Calculated: 66°
δ = 0.014
Image shows birefringence interference colour range (at 30µm thickness)
and does not take into account mineral colouration.
Chemistry of ZanazziiteHide
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Mindat Formula:
Ca2Mg5Be4(PO4)6(OH)4 · 6H2O
The formula given above is the idealised formula. The type description and Mandarino (1997) writes the formula as Ca2(Mg,Fe3+)(Mg,Fe2+, Al)Be4Mg5(PO4)6(OH)4.6H2O
Crystallography of ZanazziiteHide
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Crystal System:
Monoclinic
Class (H-M):
2/m - Prismatic
Cell Parameters:
a = 15.874(4) Å, b = 11.854(3) Å, c = 6.605(1) Å
β = 95.35°
Ratio:
a:b:c = 1.339 : 1 : 0.557
Morphology:
Barrel-shaped pseudohexagonal crystals. Forms observed: {100}, {11O}and {001}.
Crystal StructureHide
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| ID | Species | Reference | Link | Year | Locality | Pressure (GPa) | Temp (K) |
|---|---|---|---|---|---|---|---|
| 0012416 | Zanazziite | Rastsvetaeva R K, Rozenberg K A, Chukanov N V, Mockel S (2009) The crystal structure of an iron-rich variety of zanazziite belonging to heteropolyhedral framework roscherite-group beryllophosphates Crystallography Reports 54 568-571 | 2009 | Sapucaia mine, Minas Gerais, Brazil | 0 | 293 | |
| 0015658 | Zanazziite | Fanfani L, Nunzi A, Zananni P F, Zanzari A R (1975) The crystal structure of roscherite Tschermaks Mineralogische und Petrographische Mitteilungen 22 266-277 | 1975 | Lavra da Ilha, Taquaral, Minas Gerais, Brazil | 0 | 293 |
CIF Raw Data - click here to close
X-Ray Powder DiffractionHide
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Powder Diffraction Data:
| d-spacing | Intensity |
|---|---|
| 9.50 Å | (90) |
| 5.91 Å | (100) |
| 3.16 Å | (70) |
| 3.05 Å | (50) |
| 2.766 Å | (50) |
| 2.682 Å | (40b) |
| 2.208 Å | (40) |
| 1.642 Å | (50b) |
Comments:
From type description
Geological EnvironmentHide
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Geological Setting:
Granitic pegmatites
Type Occurrence of ZanazziiteHide
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General Appearance of Type Material:
As barrel-shaped crystals and crystal rosettes up to 4 mm.
Place of Conservation of Type Material:
The holotype specimen, #R17847, is preserved at the Smithsonian Institution.
Geological Setting of Type Material:
Associated Minerals at Type Locality:
Reference:
Leavens, P.B., White, J.S., Nelen, J.A. (1990): Zanazziite, a new mineral from Minas Gerais, Brazil. The Mineralogical Record: 21: 413-417.
Synonyms of ZanazziiteHide
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Other Language Names for ZanazziiteHide
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Relationship of Zanazziite to other SpeciesHide
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Other Members of this group:
| Atencioite | Ca2Fe2+3Mg2Be4(PO4)6(OH)4 · 6H2O | Tric. 1 : _P_1 |
|---|---|---|
| Footemineite | Ca2Mn2+Mn2+2Mn2+2Be4(PO4)6(OH)4 · 6H2O | Tric. 1 : _P_1 |
| Greifensteinite | Ca2Fe2+5Be4(PO4)6(OH)4 · 6H2O | Mon. 2/m : _B_2/b |
| Guimarãesite | Ca2Be4Zn5(PO4)6(OH)4 · 6H2O | Mon. 2/m : _B_2/b |
| Okruschite | Ca2Mn2+5Be4(AsO4)6(OH)4 · 6H2O | Mon. 2/m : _B_2/b |
| Roscherite | Ca2Mn2+5Be4(PO4)6(OH)4 · 6H2O | Mon. 2/m : _B_2/m |
| Ruifrancoite | Ca2(◻,Mn)2(Fe3+,Mn,Mg)4Be4(PO4)6(OH)4(OH,H2O)2 · 4H2O | Mon. 2/m : _B_2/b |
Common AssociatesHide
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Associated Minerals Based on Photo Data:
Related Minerals - Strunz-mindat GroupingHide
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| 8.DA.05 | Bearsite | Be2(AsO4)(OH) · 4H2O | Mon. |
|---|---|---|---|
| 8.DA.05 | Moraesite | Be2(PO4)(OH) · 4H2O | Mon. m : B b |
| 8.DA.10 | Roscherite | Ca2Mn2+5Be4(PO4)6(OH)4 · 6H2O | Mon. 2/m : _B_2/m |
| 8.DA.10 | Greifensteinite | Ca2Fe2+5Be4(PO4)6(OH)4 · 6H2O | Mon. 2/m : _B_2/b |
| 8.DA.10 | Atencioite | Ca2Fe2+3Mg2Be4(PO4)6(OH)4 · 6H2O | Tric. 1 : _P_1 |
| 8.DA.10 | Ruifrancoite | Ca2(◻,Mn)2(Fe3+,Mn,Mg)4Be4(PO4)6(OH)4(OH,H2O)2 · 4H2O | Mon. 2/m : _B_2/b |
| 8.DA.10 | Guimarãesite | Ca2Be4Zn5(PO4)6(OH)4 · 6H2O | Mon. 2/m : _B_2/b |
| 8.DA.10 | Footemineite | Ca2Mn2+Mn2+2Mn2+2Be4(PO4)6(OH)4 · 6H2O | Tric. 1 : _P_1 |
| 8.DA.10 | Okruschite | Ca2Mn2+5Be4(AsO4)6(OH)4 · 6H2O | Mon. 2/m : _B_2/b |
| 8.DA.15 | Uralolite | Ca2Be4(PO4)3(OH)3 · 5H2O | Mon. 2/m |
| 8.DA.20 | Weinebeneite | CaBe3(PO4)2(OH)2 · 4H2O | Mon. m : B b |
| 8.DA.25 | Tiptopite | K2(Na,Ca)2Li3Be6(PO4)6(OH)2 · H2O | Hex. 6 : _P_63 |
| 8.DA.40 | Spencerite | Zn4(PO4)2(OH)2 · 3H2O | Mon. 2/m : _P_2/b |
| 8.DA.45 | Glucine | CaBe4(PO4)2(OH)4 · 0.5H2O |
Other InformationHide
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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 ZanazziiteHide
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References for ZanazziiteHide
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Reference List:
Frost, Ray L., Xi, Yunfei, Scholz, Ricardo, Belotti, Fernanda M., Dias Menezes Filho, Luiz Alberto (2013) A vibrational spectroscopic study of the phosphate mineral zanazziite – Ca2(MgFe2+)(MgFe2+Al)4Be4(PO4)6⋅6(H2O) Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy, 104. 250-256 doi:10.1016/j.saa.2012.11.017
Localities for ZanazziiteHide
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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
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- 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.