Giacovazzoite
A valid IMA mineral species
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About Giacovazzoite
Carmelo Giacovazzo
Formula:
K5Fe3+3O(SO4)6 · 10H2O
Colour:
Orange–brown
Lustre:
Vitreous
Crystal System:
Monoclinic
Name:
The mineral is named after Carmelo Giacovazzo (born at Locorotondo, Bari, Italy, on December 14, 1940) for his outstanding contribution to crystallography.
Known synthetic analogue (beta-Maus's Salt). Chemically especially related to scordariite - second currently known K-Fe oxysulfate mineral.
Unique Identifiers
Mindat ID:
53567
Long-form identifier:
mindat:1:1:53567:2
IMA Classification of Giacovazzoite
Approved
IMA Formula:
K5Fe3+3O(S6+O4)6·10H2O
Approval year:
2019
Type description reference:
Biagioni, Cristian; Bindi, Luca; Mauro, Daniela; Pasero, Marco (2020) Crystal-chemistry of sulfates from the Apuan Alps (Tuscany, Italy). IV. Giacovazzoite, K5Fe3+3O(SO4)6(H2O)9·H2O, the natural analogue of the β-Maus’s Salt and its dehydration product. Physics and Chemistry of Minerals, 47 (1). 7 doi:10.1007/s00269-019-01076-4
Classification of Giacovazzoite
7.DF.55
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
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 for Standard |
|---|---|---|
| Gvz | 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 Giacovazzoite
Chemistry of Giacovazzoite
Mindat Formula:
K5Fe3+3O(SO4)6 · 10H2O
Element Weights:
Crystallography of Giacovazzoite
Crystal System:
Monoclinic
Class (H-M):
2/m - Prismatic
Space Group:
P21/b
Setting:
P21/c
Cell Parameters:
a = 9.4797(2) Å, b = 18.4454(5) Å, c = 18.0540(4) Å
β = 92.626(2)°
β = 92.626(2)°
Ratio:
a:b:c = 0.514 : 1 : 0.979
Unit Cell V:
3,153.55 ų (Calculated from Unit Cell)
Z:
4
X-Ray Powder Diffraction
Powder Diffraction Data:
| d-spacing | Intensity |
|---|---|
| 9.1 Å | (s) |
| 8.2 Å | (vs) |
| 4.15 Å | (mw) |
| 4.02 Å | (mw) |
| 3.442 Å | (m) |
| 3.371 Å | (m) |
| 3.005 Å | (m) |
| 2.968 Å | (m) |
Reference:
Biagioni, Cristian; Bindi, Luca; Mauro, Daniela; Pasero, Marco (2020) Crystal-chemistry of sulfates from the Apuan Alps (Tuscany, Italy). IV. Giacovazzoite, K5Fe3+3O(SO4)6(H2O)9·H2O, the natural analogue of the β-Maus’s Salt and its dehydration product. Physics and Chemistry of Minerals, 47 (1). 7 doi:10.1007/s00269-019-01076-4
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] | |
| 47h : [Near-surface oxidized, dehydrated minerals] |
Type Occurrence of Giacovazzoite
General Appearance of Type Material:
Orange–brown prismatic crystals, up to 0.1 mm long.
Place of Conservation of Type Material:
Type material is deposited in the mineralogical collections of the Museo di Storia Naturale, Università di Pisa, Via Roma 79, Calci, Pisa, Italy, catalogue number 19896
Associated Minerals at Type Locality:
Reference:
Biagioni, Cristian; Bindi, Luca; Mauro, Daniela; Pasero, Marco (2020) Crystal-chemistry of sulfates from the Apuan Alps (Tuscany, Italy). IV. Giacovazzoite, K5Fe3+3O(SO4)6(H2O)9·H2O, the natural analogue of the β-Maus’s Salt and its dehydration product. Physics and Chemistry of Minerals, 47 (1). 7 doi:10.1007/s00269-019-01076-4
Synonyms of Giacovazzoite
Other Language Names for Giacovazzoite
Dutch:Giacovazzoiet
German:Giacovazzoit
Common Associates
Associations Based on Photo Data:
| 7 photos of Giacovazzoite associated with Scordariite | K8(Fe3+0.67◻0.33)[Fe3+3O(SO4)6]2 · 14H2O |
| 1 photo of Giacovazzoite associated with Alum-(K) | KAl(SO4)2 · 12H2O |
Related Minerals - Strunz-mindat Grouping
| 7.DF. | Siligiite | [Pb(H2O)5(SO4)][Zn9(OH)18] |
| 7.DF. | Alcaparrosaite | K3Ti4+Fe3+(SO4)4O(H2O)2 |
| 7.DF. | Flaggite | Pb4Cu2+4Te6+2(SO4)2O11(OH)2(H2O) |
| 7.DF. | Bairdite | Pb2Cu2+4Te6+2O10(OH)2(SO4) · H2O |
| 7.DF. | Tzeferisite | CaZn8(SO4)2(OH)12Cl2(H2O)9 |
| 7.DF. | Cherokeeite | [Pb2Zn(OH)4](SO4) · H2O |
| 7.DF. | Ammoniomathesiusite | (NH4)5(UO2)4(SO4)4(VO5) · 4H2O |
| 7.DF. | Sigogglinite | [Pb6Zn(OH)8]2(SO4)6 · (H2O)8-x |
| 7.DF.X | Blueridgeite | [Pb8Zn3Cu2+(OH)16](SO4)2(S2O3)2 · 2H2O |
| 7.DF. | Erssonite | Mg7Fe3+2(OH)18[Ca(H2O)6](SO4)2 · 12H2O |
| 7.DF. | Poellmannite | Ca6Al3(OH)18[Na(H2O)6](SO4)2 · 6H2O |
| 7.DF. | Carlsonite | (NH4)5Fe3+3O(SO4)6 · 7H2O |
| 7.DF. | Cuprocherokeeite | [Pb8Zn3Cu2+(OH)16](SO4)4 · 4H2O |
| 7.DF. | Haywoodite | [Pb(H2O)10][Zn12(OH)20(H2O)(SO4)3] |
| 7.DF. | Chromschieffelinite | Pb10Te6+6O20(OH)14(CrO4)(H2O)5 |
| 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 | Genplesite | Ca3Sn(SO4)2(OH)6 · 3H2O |
| 7.DF.17 | 'Unnamed (Ba-Sb Silicate-Sulphate-Hydroxide-Hydrate)' | Ba3Sb5+[(Si,S)O3(OH)]2(OH,O)6 · 3H2O |
| 7.DF.20 | Sideronatrite | Na2Fe(SO4)2(OH) · 3H2O |
| 7.DF.20 | Metasideronatrite | Na2Fe(SO4)2(OH) · H2O |
| 7.DF.25 | Fleischerite | Pb3Ge(SO4)2(OH)6 · 3H2O |
| 7.DF.25 | Mallestigite | Pb3Sb5+(SO4)(AsO4)(OH)6 · 3H2O |
| 7.DF.25 | Schaurteite | Ca3Ge(SO4)2(OH)6 · 4H2O |
| 7.DF.25 | Despujolsite | Ca3Mn4+(SO4)2(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.45 | Peretaite | Ca(SbO)4(SO4)2(OH)2 · 2H2O |
| 7.DF.50 | Gordaite | NaZn4(SO4)(OH)6Cl · 6H2O |
| 7.DF.50 | Calamaite | Na2TiO(SO4)2 · 2H2O |
| 7.DF.52 | Huizingite-(Al) | [(NH4)9(SO4)2][(Al,Fe3+)3(OH)2(H2O)4(SO4)6] |
| 7.DF.52 | Scordariite | K8(Fe3+0.67◻0.33)[Fe3+3O(SO4)6]2 · 14H2O |
| 7.DF.55 | Clairite | (NH4)2Fe3(SO4)4(OH)3 · 3H2O |
| 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 | Yecoraite | Fe3+3Bi5(Te6+O4)2(Te4+O3)O9 · 9H2O |
| 7.DF.70 | Lautenthalite | PbCu4(SO4)2(OH)6 · 3H2O |
| 7.DF.75 | Riomarinaite | Bi(SO4)(OH) · H2O |
| 7.DF.80 | Dukeite | Bi3+24Cr6+8O57(OH)6 · 3H2O |
Radioactivity
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 Giacovazzoite
mindat.org URL:
https://www.mindat.org/min-53567.html
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References for Giacovazzoite
Reference List:
Miyawaki, Ritsuro, Hatert, Frédéric, Mills, Stuart J. (2019) New minerals and nomenclature modifications approved in 2019. CNMNC Newsletter 49. Mineralogical Magazine, 83 (3) 479-483 doi:10.1180/mgm.2019.35
Biagioni, Cristian; Bindi, Luca; Mauro, Daniela; Pasero, Marco (2020) Crystal-chemistry of sulfates from the Apuan Alps (Tuscany, Italy). IV. Giacovazzoite, K5Fe3+3O(SO4)6(H2O)9·H2O, the natural analogue of the β-Maus’s Salt and its dehydration product. Physics and Chemistry of Minerals, 47 (1). 7 doi:10.1007/s00269-019-01076-4
Long, Analeece; Powell, Matthew; Dickey, Ashley; McMillen, Colin; Kolis, Joseph (2026) Maus's salts: an old family of iron sulfates with possible magnetic frustration. Acta Crystallographica Section B Structural Science, Crystal Engineering and Materials, 82 (3). p.268-279. doi:10.1107/s2052520626002027(structure of alpha-K5[Fe3O(SO4)6(H2O)3]·5H2O)
Localities for Giacovazzoite
Showing 1 localities.
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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.
Italy (TL) | |
| Miyawaki et al. (2019) +4 other references |
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Monte Arsiccio Mine, Sant'Anna di Stazzema, Stazzema, Lucca Province, Tuscany, Italy