Mambertiite
A valid IMA mineral species
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About Mambertiite
Marzio Mamberti
Formula:
BiMo5+2.80O8(OH)
Colour:
Pale yellow
Lustre:
Adamantine
Crystal System:
Triclinic
Name:
Its name honors the Italian mineral collector Marzio Mamberti (b. 1959) for his contribution to the knowledge of the Sardinian mineralogy.
Structurally related to gelosaite. The fourth recognized Bi-Mo mineral.
Structure details/elements:
- [8]Bi-centred polyhedra
- five independent Mo-centred octahedra, only two of these are fully occupied
- two kinds of (101) layers alternating along [101]*:
* comprising Bi-centered polyhedra and two partially occupied Mo4 and Mo5 sites,
* comprising zigzag chains along c with the fully occupied Mo1 and Mo2 sites and the partially occupied Mo3 site.
Structure details/elements:
- [8]Bi-centred polyhedra
- five independent Mo-centred octahedra, only two of these are fully occupied
- two kinds of (101) layers alternating along [101]*:
* comprising Bi-centered polyhedra and two partially occupied Mo4 and Mo5 sites,
* comprising zigzag chains along c with the fully occupied Mo1 and Mo2 sites and the partially occupied Mo3 site.
Unique Identifiers
Mindat ID:
46012
Long-form identifier:
mindat:1:1:46012:9
IMA Classification of Mambertiite
Classification of Mambertiite
4.DM.30
4 : OXIDES (Hydroxides, V[5,6] vanadates, arsenites, antimonites, bismuthites, sulfites, selenites, tellurites, iodates)
D : Metal: Oxygen = 1:2 and similar
M : With large (+- medium-sized) cations; unclassified
4 : OXIDES (Hydroxides, V[5,6] vanadates, arsenites, antimonites, bismuthites, sulfites, selenites, tellurites, iodates)
D : Metal: Oxygen = 1:2 and similar
M : With large (+- medium-sized) cations; unclassified
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 |
|---|---|---|
| Mam | 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 Mambertiite
Chemistry of Mambertiite
Mindat Formula:
BiMo5+2.80O8(OH)
Element Weights:
Elements listed:
Crystallography of Mambertiite
Crystal System:
Triclinic
Class (H-M):
1 - Pinacoidal
Space Group:
P1
Setting:
P1
Cell Parameters:
a = 5.854(2) Å, b = 7.637(3) Å, c = 9.050(3) Å
α = 112.85(1)°, β = 90.04(1)°, γ = 102.58(1)°
α = 112.85(1)°, β = 90.04(1)°, γ = 102.58(1)°
Ratio:
a:b:c = 0.767 : 1 : 1.185
Unit Cell V:
362.3 ų
Z:
2
Morphology:
tabular crystals, up to 1 mm in length and few μm thick
X-Ray Powder Diffraction
Powder Diffraction Data:
| d-spacing | Intensity |
|---|---|
| 8.3 Å | (ms) |
| 4.92 Å | (s) |
| 3.417 Å | (vs) |
| 3.136 Å | (ms) |
| 2.850 Å | (ms) |
Comments:
From Type Description.
Geological Environment
Paragenetic Mode(s):
| Paragenetic Mode | Earliest Age (Ga) |
|---|---|
| Near-surface Processes | |
| 23 : Subaerial aqueous alteration by non-redox-sensitive fluids (see also #47) | |
| Stage 7: Great Oxidation Event | <2.4 |
| 47a : [Near-surface hydration of prior minerals] | |
| 47d : [Arsenates, antimonates, selenates, bismuthinates] | |
| 47h : [Near-surface oxidized, dehydrated minerals] |
Type Occurrence of Mambertiite
Place of Conservation of Type Material:
Type material is deposited in the collections of the Museo di Storia Naturale, Universita` di Pisa, Calci (Pisa), Italy, catalogue number 19682
Geological Setting of Type Material:
Small vugs in quartz veins
Associated Minerals at Type Locality:
Synonyms of Mambertiite
Other Language Names for Mambertiite
Dutch:Mambertiiet
German:Mambertiit
Common Associates
Associations Based on Photo Data:
| 2 photos of Mambertiite associated with Molybdenite | MoS2 |
Related Minerals - Strunz-mindat Grouping
| 4.DM. | Sugarwhiteite | Pb2Te5O12 |
| 4.DM. | Zuolinite | Ba2Sr(Nb4.5Fe3+0.5)O15 |
| 4.DM. | Bahariyaite | KMnO4 |
| 4.DM.05 | Rankamaite | (Na,K)3(Ta,Nb,Al)11(O,OH)31 |
| 4.DM.05 | Sosedkoite | (K,Na)5Al2(Ta,Nb)22O60 |
| 4.DM.15 | Cesplumtantite | (Cs,Na)2(Pb,Sb3+)3Ta8O24 |
| 4.DM.20 | Eyselite | Fe3+Ge4+3O7(OH) |
| 4.DM.25 | Konzettite | CaMn4+Te6+O6 |
| 4.DM.25 | Kuranakhite | PbMn4+Te6+O6 |
| 4.DM.30 | Gelosaite | BiMo6+(2-5x)Mo5+6xO7(OH) · H2O |
| 4.DM.35 | Ekebergite | ThFeNb2O8 |
| 4.DM.45 | Riesite | TiO2 |
| 4.DM.50 | Sardignaite | BiMo2O7(OH) · 2H2O |
| 4.DM.55 | Tewite | (K1.5◻0.5)(Te1.25W0.25◻0.5)W5O19 |
| 4.DM.60 | Wumuite | K(W2.67Al0.33)O9 |
| 4.DM.60 | Kingsgateite | ZrMo6+2O7(OH)2 · 2H2O |
| 4.DM.60 | Morningstarite | Na(W2.67Fe3+0.33)O9 · H2O |
Other Information
IR Spectrum:
confirms the presence of OH groups
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 Mambertiite
mindat.org URL:
https://www.mindat.org/min-46012.html
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References for Mambertiite
Reference List:
Williams, P. A., Hatert, F., Pasero, M., Mills, S. J. (2013) New minerals and nomenclature modifications approved in 2013. CNMNC Newsletter No 18. Mineralogical Magazine, 77 (8) 3249-3258 doi:10.1180/minmag.2013.077.8.15
Orlandi, Paolo, Biagioni, Cristian, Pasero, Marco, Demartin, Francesco, Campostrini, Italo, Merlino, Stefano (2015) Mambertiite, BiMo5+2.80O8(OH), a new mineral from Su Seinargiu, Sardinia, Italy: occurrence, crystal structure, and relationships with gelosaite. European Journal of Mineralogy, 27 (3) 405-415 doi:10.1127/ejm/2015/0027-2434
Localities for Mambertiite
Showing 3 localities.
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.
Australia | |
| John Haupt collection +1 other reference |
| Elliott et al. (2022) | |
Italy (TL) | |
| Williams et al. (2013) +2 other references |
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Punta de Su Seinargiu, Sarroch, Metropolitan City of Cagliari, Sardinia, Italy