Peretaite
A valid IMA mineral species
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About Peretaite
Formula:
Ca(SbO)4(SO4)2(OH)2 · 2H2O
Colour:
Colourless
Lustre:
Vitreous
Hardness:
3½ - 4
Specific Gravity:
4.06 (Calculated)
Crystal System:
Monoclinic
Name:
From the type locality.
Type Locality:
This page provides mineralogical data about Peretaite.
Unique Identifiers
Mindat ID:
3159
Long-form identifier:
mindat:1:1:3159:8
GUID
(UUID V4):
(UUID V4):
5bd1056f-f945-4cae-941f-07b73df15bcb
IMA Classification of Peretaite
Approved
IMA Formula:
CaSb3+4O4(SO4)2(OH)2 · 2H2O
Approval year:
1979
First published:
1980
Classification of Peretaite
7.DF.45
7 : SULFATES (selenates, tellurates, chromates, molybdates, wolframates)
D : Sulfates (selenates, etc.) with additional anions, with H2O
F : With large and medium-sized cations
7 : SULFATES (selenates, tellurates, chromates, molybdates, wolframates)
D : Sulfates (selenates, etc.) with additional anions, with H2O
F : With large and medium-sized cations
31.6.4.1
31 : HYDRATED SULFATES CONTAINING HYDROXYL OR HALOGEN
6 : (AB)5(XO4)2Zq·xH2O
31 : HYDRATED SULFATES CONTAINING HYDROXYL OR HALOGEN
6 : (AB)5(XO4)2Zq·xH2O
25.8.3
25 : Sulphates
8 : Sulphates of Sb, V, Cr and U
25 : Sulphates
8 : Sulphates of Sb, V, Cr and U
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 |
|---|---|---|
| Pta | 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 Peretaite
Vitreous
Transparency:
Transparent
Colour:
Colourless
Comment:
Can be pink due to encrustations of valentinite.
Streak:
White
Hardness:
3½ - 4 on Mohs scale
Hardness:
VHN15=170 - 190 kg/mm2 - Vickers
Cleavage:
Perfect
Perfect on {100}.
Perfect on {100}.
Density:
4.06 g/cm3 (Calculated)
Comment:
Measured > 3.8
Optical Data of Peretaite
Type:
Biaxial (+)
RI values:
nα = 1.841(1) nγ = 1.935(1)
Max Birefringence:
δ = 0.094
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
Dispersion:
relatively strong
Optical Extinction:
Z = c; X ∧ b = ∼28°.
Comments:
Beta not determined. 2V is very large.
Chemistry of Peretaite
Mindat Formula:
Ca(SbO)4(SO4)2(OH)2 · 2H2O
Crystallography of Peretaite
Crystal System:
Monoclinic
Class (H-M):
2/m - Prismatic
Space Group:
B2/b
Cell Parameters:
a = 24.665(4) Å, b = 5.6006(9) Å, c = 10.185(1) Å
β = 95.98(1)°
β = 95.98(1)°
Ratio:
a:b:c = 4.404 : 1 : 1.819
Unit Cell V:
1,399.29 ų (Calculated from Unit Cell)
Z:
4
Morphology:
Divergent sprays of laths, botyroidal, massive. Crystals are flattened on {100} and often elongated along [001]. Forms include {100}, {310}, {110}, {122}, {001}, {010}, {210}, {201}, {302}, and {601}.
Twinning:
Very common on {100}.
Crystal Structure
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2x2x2 | 3x3x3 | 4x4x4
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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) |
|---|---|---|---|---|---|---|---|
| 0000796 | Peretaite | Menchetti S, Sabelli C (1980) Peretaite, CaSb4O4(OH)2(SO4)2*2H2O: Its atomic arrangement and twinning American Mineralogist 65 940-946 |  | 1980 | 0 | 293 |
CIF Raw Data - click here to close
X-Ray Powder Diffraction
Powder Diffraction Data:
| d-spacing | Intensity |
|---|---|
| 12.19 Å | (100) |
| 3.06 Å | (67) |
| 2.451 Å | (31) |
| 3.10 Å | (24) |
| 6.12 Å | (21) |
| 2.532 Å | (20) |
| 2.068 Å | (17) |
Geological Environment
Paragenetic Mode(s):
| Paragenetic Mode | Earliest Age (Ga) |
|---|---|
| Stage 7: Great Oxidation Event | <2.4 |
| 47a : [Near-surface hydration of prior minerals] | |
| 47b : [Sulfates and sulfites] | |
| 47d : [Arsenates, antimonates, selenates, bismuthinates] |
Geological Setting:
Formed by the action of sulfuric acid on oxidizing stibnite deposits.
Type Occurrence of Peretaite
General Appearance of Type Material:
Aggregates of tabular crystals. The largest crystals have dimensions up to 5 x 2 x 0.5 mm.
Place of Conservation of Type Material:
University of Florence, Florence, Italy, number 164/I.
Pisa University, Pisa, Italy.
National Museum of Natural History, Washington, D.C., USA, numbers 148481, 148482.
Pisa University, Pisa, Italy.
National Museum of Natural History, Washington, D.C., USA, numbers 148481, 148482.
Geological Setting of Type Material:
Stibnite deposit in deeply silicified limestone. Formed by the action of sulfuric acid on stibnite in the presence of limestone.
Associated Minerals at Type Locality:
Reference:
Cipriani, N., Menchetti, S., Orlandi, P., Sabelli, C. (1980) Peretaite, CaSb4O4(OH)2(SO4)2·2H2O, a new mineral from Pereta, Tuscany, Italy. American Mineralogist: 65: 936-939.
Synonyms of Peretaite
Other Language Names for Peretaite
Common Associates
Associated Minerals Based on Photo Data:
| 19 photos of Peretaite associated with Klebelsbergite | Sb4O4(SO4)(OH)2 |
| 14 photos of Peretaite associated with Stibnite | Sb2S3 |
| 4 photos of Peretaite associated with Sulphur | S8 |
| 3 photos of Peretaite associated with Quartz | SiO2 |
| 3 photos of Peretaite associated with Kermesite | Sb2S2O |
| 2 photos of Peretaite associated with Metastibnite | Sb2S3 |
| 1 photo of Peretaite associated with Tripuhyite | Fe3+Sb5+O4 |
| 1 photo of Peretaite associated with Valentinite | Sb2O3 |
Related Minerals - Strunz-mindat Grouping
| 7.DF. | Aldridgeite | (Cd,Ca)(Cu,Zn)4(SO4)2(OH)6 · 3H2O |
| 7.DF. | Chromschieffelinite | Pb10Te6+6O20(OH)14(CrO4)(H2O)5 |
| 7.DF. | Alcaparrosaite | K3Ti4+Fe3+(SO4)4O(H2O)2 |
| 7.DF. | Bairdite | Pb2Cu2+4Te6+2O10(OH)2(SO4) · H2O |
| 7.DF. | Carlsonite | (NH4)5Fe3+3O(SO4)6 · 7H2O |
| 7.DF. | Ammoniomathesiusite | (NH4)5(UO2)4(SO4)4(VO5) · 4H2O |
| 7.DF. | Erssonite | Mg7Fe3+2(OH)18[Ca(H2O)6](SO4)2 · 12H2O |
| 7.DF. | Flaggite | Pb4Cu2+4Te6+2(SO4)2O11(OH)2(H2O) |
| 7.DF. | Poellmannite | Ca6Al3(OH)18[Na(H2O)6](SO4)2 · 6H2O |
| 7.DF. | Haywoodite | [Pb(H2O)10][Zn12(OH)20(H2O)(SO4)3] |
| 7.DF. | Cherokeeite | [Pb2Zn(OH)4](SO4) · H2O |
| 7.DF. | Cuprocherokeeite | [Pb8Zn3Cu2+(OH)16](SO4)4 · 4H2O |
| 7.DF. | Tzeferisite | CaZn8(SO4)2(OH)12Cl2(H2O)9 |
| 7.DF.05 | Uklonskovite | NaMg(SO4)F · 2H2O |
| 7.DF.10 | Kainite | KMg(SO4)Cl · 3H2O |
| 7.DF.10 | Kaliochalcite | KCu2(SO4)2[(OH)(H2O)] |
| 7.DF.15 | Natrochalcite | NaCu2(SO4)2(OH) · 2H2O |
| 7.DF.17 | Unnamed (Ba-Sb Silicate-Sulphate-Hydroxide-Hydrate) | Ba3Sb5+[(Si,S)O3(OH)]2(OH,O)6 · 3H2O |
| 7.DF.17 | Genplesite | Ca3Sn(SO4)2(OH)6 · 3H2O |
| 7.DF.20 | Metasideronatrite | Na2Fe(SO4)2(OH) · H2O |
| 7.DF.20 | Sideronatrite | Na2Fe(SO4)2(OH) · 3H2O |
| 7.DF.25 | Despujolsite | Ca3Mn4+(SO4)2(OH)6 · 3H2O |
| 7.DF.25 | Fleischerite | Pb3Ge(SO4)2(OH)6 · 3H2O |
| 7.DF.25 | Schaurteite | Ca3Ge(SO4)2(OH)6 · 4H2O |
| 7.DF.25 | Mallestigite | Pb3Sb5+(SO4)(AsO4)(OH)6 · 3H2O |
| 7.DF.30 | Slavíkite | (H3O+)3Mg6Fe15(SO4)21(OH)18 · 98H2O |
| 7.DF.35 | Metavoltine | K2Na6Fe2+Fe3+6O2(SO4)12 · 18H2O |
| 7.DF.40 | Lannonite | Mg2Ca4Al4(SO4)8F8 · 24H2O |
| 7.DF.40 | Vlodavetsite | AlCa2(SO4)2F2Cl · 4H2O |
| 7.DF.50 | Gordaite | NaZn4(SO4)(OH)6Cl · 6H2O |
| 7.DF.50 | Calamaite | Na2TiO(SO4)2 · 2H2O |
| 7.DF.52 | Scordariite | K8(Fe3+0.67◻0.33)[Fe3+3O(SO4)6]2 · 14H2O |
| 7.DF.52 | Huizingite-(Al) | [(NH4)9(SO4)2][(Al,Fe3+)3(OH)2(H2O)4(SO4)6] |
| 7.DF.55 | Clairite | (NH4)2Fe3(SO4)4(OH)3 · 3H2O |
| 7.DF.55 | Giacovazzoite | K5Fe3+3O(SO4)6 · 10H2O |
| 7.DF.57 | Magnanelliite | K3Fe3+2(SO4)4(OH)(H2O)2 |
| 7.DF.60 | Arzrunite | Cu4Pb2(SO4)(OH)4Cl6 · 2H2O (?) |
| 7.DF.60 | Evdokimovite | Tl4(VO)3(SO4)5(H2O)5 |
| 7.DF.62 | Bridgesite-(Ce) | CaCe2Cu6(SO4)4(OH)12 · 8H2O |
| 7.DF.65 | Elyite | Pb4Cu(SO4)O2(OH)4 · H2O |
| 7.DF.70 | Lautenthalite | PbCu4(SO4)2(OH)6 · 3H2O |
| 7.DF.70 | Yecoraite | Fe3+3Bi5(Te6+O4)2(Te4+O3)O9 · 9H2O |
| 7.DF.75 | Riomarinaite | Bi(SO4)(OH) · H2O |
| 7.DF.80 | Dukeite | Bi3+24Cr6+8O57(OH)6 · 3H2O |
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 Peretaite
mindat.org URL:
https://www.mindat.org/min-3159.html
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References for Peretaite
Reference List:
Cipriani, Nicola, Menchetti, Silvio, Orlandi, Paolo, Sabelli, Cesare (1980) Peretaite, CaSb4O4(OH)2(SO4)2·2H2O, a new mineral from Pereta, Tuscany, Italy. American Mineralogist, 65 (9-10) 936-939
Menchetti, Silvio, Sabelli, Cesare (1980) Peretaite, CaSb4O4(OH)2(SO4)2·2H2O: its atomic arrangement and twinning. American Mineralogist, 65 (9-10) 940-946
Localities for Peretaite
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.
Greece | |
| Skarpelis et al. (2009) |
Italy (TL) | |
| The Mineralogical Record (1) +1 other reference |
| Nannoni R. et al. (PI) +2 other references |
| Mineralogical Record (1) +1 other reference |
Luxembourg | |
| Filella et al. (2009) |
Slovakia | |
| Majzlan et al. (2016) |
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Pereta Mine, Scansano, Grosseto Province, Tuscany, Italy