Bonacinaite
A valid IMA mineral species
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About Bonacinaite
Enrico Bonacina (2019)
Formula:
Sc(AsO4) · 2H2O
Crystal System:
Monoclinic
Member of:
Name:
Named in honor of Enrico Bonacina (1928-2024), dean of micromineral photography in Italy.
Type Locality:
The As analogue of kolbeckite. Unique combination of elements: the first natural scandium arsenate.
Ex UM2005-02-AsO:AlHPScSi.
Ex UM2005-02-AsO:AlHPScSi.
Unique Identifiers
Mindat ID:
53152
Long-form identifier:
mindat:1:1:53152:4
GUID
(UUID V4):
(UUID V4):
2c927ed7-f89d-4b9d-9be0-a4d6390aec5f
IMA Classification of Bonacinaite
Approved, Pending publication
Approval year:
2018
Classification of Bonacinaite
8.CD.05
8 : PHOSPHATES, ARSENATES, VANADATES
C : Phosphates without additional anions, with H2O
D : With only medium-sized cations, RO4:H2O = 1:2
8 : PHOSPHATES, ARSENATES, VANADATES
C : Phosphates without additional anions, with H2O
D : With only medium-sized cations, RO4:H2O = 1:2
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 |
|---|---|---|
| Bci | IMA–CNMNC | Warr, L.N. (2021). IMA–CNMNC approved mineral symbols. Mineralogical Magazine, 85(3), 291-320. doi:10.1180/mgm.2021.43 |
Chemistry of Bonacinaite
Mindat Formula:
Sc(AsO4) · 2H2O
Elements listed:
Crystallography of Bonacinaite
Crystal System:
Monoclinic
Class (H-M):
2/m - Prismatic
Cell Parameters:
a = 5.533(1) Å, b = 10.409(2) Å, c = 9.306(2) Å
β = 91.94(3)°
β = 91.94(3)°
Ratio:
a:b:c = 0.532 : 1 : 0.894
Unit Cell V:
535.65 ų (Calculated from Unit Cell)
Z:
4
Comment:
Space group is P21/n
X-Ray Powder Diffraction
Powder Diffraction Data:
| d-spacing | Intensity |
|---|---|
| 4.865 Å | (100) |
| 4.638 Å | (18) |
| 4.525 Å | (32) |
| 3.771 Å | (34) |
| 2.924 Å | (44) |
| 2.759 Å | (31) |
| 2.665 Å | (94) |
| 1.733 Å | (36) |
Geological Environment
Paragenetic Mode(s):
| Paragenetic Mode | Earliest Age (Ga) |
|---|---|
| Stage 7: Great Oxidation Event | <2.4 |
| 47a : [Near-surface hydration of prior minerals] | |
| 47d : [Arsenates, antimonates, selenates, bismuthinates] |
Type Occurrence of Bonacinaite
Place of Conservation of Type Material:
(1) Mineralogical collections of the Museum of the Earth Sciences Department, University of Milano, catalogue number MCMGPG-H2018-001 (holotype); (2) the Natural History Museum, Vienna, catalogue number O 571 (crystal used for the crystal structure determination).
Synonyms of Bonacinaite
Relationship of Bonacinaite to other Species
Member of:
Other Members of this group:
| Kolbeckite | ScPO4 · 2H2O | Mon. 2/m |
| Metavariscite | AlPO4 · 2H2O | Mon. 2/m : P21/b |
| Phosphosiderite | FePO4 · 2H2O | Mon. 2/m |
Related Minerals - Strunz-mindat Grouping
| 8.CD. | Castellaroite | Mn2+3(AsO4)2 · 4H2O |
| 8.CD. | Sergeysmirnovite | MgZn2(PO4)2 · 4H2O |
| 8.CD.05 | Kolbeckite | ScPO4 · 2H2O |
| 8.CD.05 | Metavariscite | AlPO4 · 2H2O |
| 8.CD.05 | Phosphosiderite | FePO4 · 2H2O |
| 8.CD.10 | Mansfieldite | AlAsO4 · 2H2O |
| 8.CD.10 | Scorodite | Fe3+AsO4 · 2H2O |
| 8.CD.10 | Strengite | FePO4 · 2H2O |
| 8.CD.10 | Variscite | AlPO4 · 2H2O |
| 8.CD.10 | Yanomamite | InAsO4 · 2H2O |
| 8.CD.15 | Parascorodite | FeAsO4 · 2H2O |
| 8.CD.20 | Ludlamite | Fe2+3(PO4)2 · 4H2O |
| 8.CD.25 | Sterlinghillite | Mn2+3(AsO4)2 · 3H2O |
| 8.CD.30 | Rollandite | Cu3(AsO4)2 · 4H2O |
| 8.CD.35 | Liversidgeite | Zn6(PO4)4 · 7H2O |
| 8.CD.40 | Thorasphite | Th2H(PO4,AsO4)3 · 6H2O |
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 Bonacinaite
mindat.org URL:
https://www.mindat.org/min-53152.html
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References for Bonacinaite
Reference List:
Hålenius, U., Hatert, F., Pasero, M., Mills, S. J. (2018) CNMNC Newsletter 45, New minerals and nomenclature modifications approved in 2018. Mineralogical Magazine, 82 (5) 1225-1232 doi:10.1180/mgm.2018.160p.1228
Kolitsch, Uwe, Weil, Matthias, Kovrugin, Vadim M., Krivovichev, Sergey V. (2020) Crystal chemistry of the variscite and metavariscite groups: Crystal structures of synthetic CrAsO4⋅2H2O, TlPO4⋅2H2O, MnSeO4⋅2H2O, CdSeO4⋅2H2O and natural bonacinaite, ScAsO4⋅2H2O. Mineralogical Magazine, 84 (4) 568-583 doi:10.1180/mgm.2020.57
Localities for Bonacinaite
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.
Italy (TL) | |
| Mineralogical Magazine: 82: xxx-xxx +3 other references |
Varenche Mine, Saint-Barthélemy, Nus, Aosta Valley, Italy