Zanazziite
A valid IMA mineral species
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About Zanazziite
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
Lustre:
Vitreous, Pearly
Hardness:
5
Specific Gravity:
2.76
Crystal System:
Monoclinic
Member of:
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).
Type Locality:
Isostructural with:
Unique Identifiers
Mindat ID:
4385
Long-form identifier:
mindat:1:1:4385:0
IMA Classification of Zanazziite
Approved
IMA Formula:
Ca2Be4Mg5(PO4)6(OH)4 · 6H2O
Approval year:
1986
First published:
1990
Classification of Zanazziite
8.DA.10
8 : PHOSPHATES, ARSENATES, VANADATES
D : Phosphates, etc. with additional anions, with H2O
A : With small (and occasionally larger) cations
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
42 : HYDRATED PHOSPHATES, ETC.CONTAINING HYDROXYL OR HALOGEN
7 : (AB)2(XO4)Zq·xH2O
19.12.64
19 : Phosphates
12 : Phosphates of Mn
19 : Phosphates
12 : Phosphates of Mn
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 |
|---|---|---|
| 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 Zanazziite
Vitreous, Pearly
Transparency:
Translucent
Comment:
Pearly on cleavages
Colour:
Pale to dark olive-green
Streak:
White
Hardness:
5 on Mohs scale
Tenacity:
Brittle
Cleavage:
Distinct/Good
Good on {100}
Distinct on {010}
Good on {100}
Distinct on {010}
Density:
2.76 g/cm3 (Measured) 2.77 g/cm3 (Calculated)
Optical Data of Zanazziite
Type:
Biaxial (+)
RI values:
nα = 1.606(2) nβ = 1.610 nγ = 1.620
2V:
Measured: 72° , Calculated: 66°
Max. Birefringence:
δ = 0.014
Based on recorded range of RI values above.
Based on recorded range of RI values above.
Interference Colours:
The colours simulate birefringence patterns seen in thin section under crossed polars. They do not take into account mineral colouration or opacity.
Michel-Levy Bar The default colours simulate the birefringence range for a 30 µm thin-section thickness. Adjust the slider to simulate a different thickness.
Grain Simulation You can rotate the grain simulation to show how this range might look as you rotated a sample under crossed polars.
The colours simulate birefringence patterns seen in thin section under crossed polars. They do not take into account mineral colouration or opacity.
Michel-Levy Bar The default colours simulate the birefringence range for a 30 µm thin-section thickness. Adjust the slider to simulate a different thickness.
Grain Simulation You can rotate the grain simulation to show how this range might look as you rotated a sample under crossed polars.
Surface Relief:
Moderate
Dispersion:
r < v
Chemistry of Zanazziite
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
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
Element Weights:
Common Impurities:
Mn,Si
Crystallography of Zanazziite
Crystal System:
Monoclinic
Class (H-M):
2/m - Prismatic
Space Group:
B2/b
Setting:
C2/c
Cell Parameters:
a = 15.874(4) Å, b = 11.854(3) Å, c = 6.605(1) Å
β = 95.35°
β = 95.35°
Ratio:
a:b:c = 1.339 : 1 : 0.557
Unit Cell V:
1237 ų
Z:
2
Morphology:
Barrel-shaped pseudohexagonal crystals. Forms observed: {100}, {11O}and {001}.
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) |
|---|---|---|---|---|---|---|---|
| 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 Diffraction
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 Environment
Paragenetic Mode(s):
| Paragenetic Mode | Earliest Age (Ga) |
|---|---|
| Stage 4b: Highly evolved igneous rocks | >3.0 |
| 34 : Complex granite pegmatites |
Geological Setting:
Granitic pegmatites
Type Occurrence of Zanazziite
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:
Granite pegmatite
Associated Minerals at Type Locality:
Synonyms of Zanazziite
Other Language Names for Zanazziite
Relationship of Zanazziite to other Species
Member of:
Other Members of Roscherite Group:
| Atencioite | Ca2Fe2+3Mg2Be4(PO4)6(OH)4 · 6H2O | Tric. 1 : P1 |
| Footemineite | Ca2Mn2+Mn2+2Mn2+2Be4(PO4)6(OH)4 · 6H2O | Tric. 1 : P1 |
| Greifensteinite | Ca2Fe2+5Be4(PO4)6(OH)4 · 6H2O | Mon. 2/m : B2/b |
| Guimarãesite | Ca2Be4Zn5(PO4)6(OH)4 · 6H2O | Mon. 2/m : B2/b |
| Okruschite | Ca2Mn2+5Be4(AsO4)6(OH)4 · 6H2O | Mon. 2/m : B2/b |
| Roscherite | Ca2Mn2+5Be4(PO4)6(OH)4 · 6H2O | Mon. 2/m : B2/m |
| Ruifrancoite | Ca2(◻,Mn)2(Fe3+,Mn,Mg)4Be4(PO4)6(OH)4(OH,H2O)2 · 4H2O | Mon. 2/m : B2/b |
Common Associates
Associated Minerals Based on Photo Data:
| 120 photos of Zanazziite associated with Eosphorite | Mn2+Al(PO4)(OH)2 · H2O |
| 73 photos of Zanazziite associated with Albite | Na(AlSi3O8) |
| 66 photos of Zanazziite associated with Quartz | SiO2 |
| 65 photos of Zanazziite associated with Rose Quartz | SiO2 |
| 51 photos of Zanazziite associated with Kosnarite | KZr2(PO4)3 |
| 28 photos of Zanazziite associated with Greifensteinite | Ca2Fe2+5Be4(PO4)6(OH)4 · 6H2O |
| 25 photos of Zanazziite associated with Cookeite | (LiAl4◻)[AlSi3O10](OH)8 |
| 24 photos of Zanazziite associated with Muscovite | KAl2(AlSi3O10)(OH)2 |
| 19 photos of Zanazziite associated with Topaz | Al2(SiO4)(F,OH)2 |
| 18 photos of Zanazziite associated with Hydroxylherderite | CaBe(PO4)(OH) |
Related Minerals - Strunz-mindat Grouping
| 8.DA.05 | Bearsite | Be2(AsO4)(OH) · 4H2O |
| 8.DA.05 | Moraesite | Be2(PO4)(OH) · 4H2O |
| 8.DA.10 | Atencioite | Ca2Fe2+3Mg2Be4(PO4)6(OH)4 · 6H2O |
| 8.DA.10 | Guimarãesite | Ca2Be4Zn5(PO4)6(OH)4 · 6H2O |
| 8.DA.10 | Footemineite | Ca2Mn2+Mn2+2Mn2+2Be4(PO4)6(OH)4 · 6H2O |
| 8.DA.10 | Greifensteinite | Ca2Fe2+5Be4(PO4)6(OH)4 · 6H2O |
| 8.DA.10 | Roscherite | Ca2Mn2+5Be4(PO4)6(OH)4 · 6H2O |
| 8.DA.10 | Ruifrancoite | Ca2(◻,Mn)2(Fe3+,Mn,Mg)4Be4(PO4)6(OH)4(OH,H2O)2 · 4H2O |
| 8.DA.10 | Okruschite | Ca2Mn2+5Be4(AsO4)6(OH)4 · 6H2O |
| 8.DA.15 | Uralolite | Ca2Be4(PO4)3(OH)3 · 5H2O |
| 8.DA.20 | Weinebeneite | CaBe3(PO4)2(OH)2 · 4H2O |
| 8.DA.25 | Tiptopite | K2(Na,Ca)2Li3Be6(PO4)6(OH)2 · H2O |
| 8.DA.40 | Spencerite | Zn4(PO4)2(OH)2 · 3H2O |
| 8.DA.45 | Glucine | CaBe4(PO4)2(OH)4 · 0.5H2O |
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 Zanazziite
mindat.org URL:
https://www.mindat.org/min-4385.html
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References for Zanazziite
Reference List:
Leavens, Peter B., White, John Sampson, Nelen, Joseph A. (1990) Zanazziite, a new mineral from Minas Gerais, Brazil. The Mineralogical Record, 21 (5) Tucson. 413-417
Rastsvetaeva, R. K., Rozenberg, K. A., Chukanov, N. V., Möckel, S. (2009) The crystal structure of an iron-rich variety of zanazziite belonging to heteropolyhedral framework roscherite-group beryllophosphates. Crystallography Reports, 54 (4) 568-571 doi:10.1134/s1063774509040051
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 Zanazziite
symbol to view information about a locality.
The 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).
All localities listed without proper references should be considered as questionable.
Austria | |
| Walter (1998) +1 other reference |
| Pichler (2009) |
Brazil | |
| Menezes Filho et al. (2019) |
| Leon Hupperichs photo | |
| Sergio Varvello specimen & Photo | |
| Sergio Varvello collection |
| |
| Simone Citon specimen | |
| Cahves et al. (2016) | |
| Menezes Filho et al. (2012) | |
| www.shannonsminerals.com (n.d.) | |
| Sergio Varvello collection | |
| Atencio et al. (2005) |
| Leavens et al. (1990) |
| Luiz Alberto Dias Menezes Filho et al. (2016) | |
| Chukanov et al. (2007) |
| Luis Menezes +1 other reference | |
| Menezes (n.d.) | |
| Confirmed | |
| Paulo Matioli |
| Atencio et al. (2005) | |
USA | |
| King et al. (1994) +1 other reference |
| King et al. (1994) +1 other reference | |
| Whitmore et al. (2004) +2 other references |
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Ilha claim, Taquaral, Itinga, Minas Gerais, Brazil