Albertiniite
A valid IMA mineral species
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About Albertiniite
Claudio Albertini
Formula:
Fe2+(SO3) · 3H2O
Colour:
colorless to yellowish
Lustre:
Vitreous
Specific Gravity:
2.458 (Calculated)
Crystal System:
Monoclinic
Name:
Named in 2015 by Vignola, P. et al. in honour of Claudio Albertini (1 June 1950 - 11 June 2018), an Italian mineral collector and expert in the systematic mineralogy of the Alps and pegmatites. Claudio Albertini is author of several papers in journals for mineral collectors and mineralogists, and he is author of the volume âLâAlpe Devero e i suoi mineraliâ on the worldwide famous locality of Mount Cervandone.
Stoichiometrically similar to gravegliaite (Mn-dominant), but not analogous due to structural difference. The true analogue is mikenewite.
One of a very few natural sulphites, by hannebachite, orschallite, and scotlandite (i.a.).
Compare some unnamed intermediate/mixed-valence S species from carbonate-hosted Zn-Pb deposits: Unnamed (Fe Sulphite) (an anhydrous counterpart), Unnamed (Zn Sulphite); UM1995-34-SO:Fe, UM1995-35-SO:FePb, Unnamed (Fe Subsulphite), pyrosulphites (Unnamed (Fe Pyrosulphite)), and sulphoxylanes (Unnamed (Fe Sulphoxylane)). You may also want to compare with Unnamed (Fe Oxysulphide).
One of a very few natural sulphites, by hannebachite, orschallite, and scotlandite (i.a.).
Compare some unnamed intermediate/mixed-valence S species from carbonate-hosted Zn-Pb deposits: Unnamed (Fe Sulphite) (an anhydrous counterpart), Unnamed (Zn Sulphite); UM1995-34-SO:Fe, UM1995-35-SO:FePb, Unnamed (Fe Subsulphite), pyrosulphites (Unnamed (Fe Pyrosulphite)), and sulphoxylanes (Unnamed (Fe Sulphoxylane)). You may also want to compare with Unnamed (Fe Oxysulphide).
Unique Identifiers
Mindat ID:
46619
Long-form identifier:
mindat:1:1:46619:6
IMA Classification of Albertiniite
Classification of Albertiniite
4.JE.X
4 : OXIDES (Hydroxides, V[5,6] vanadates, arsenites, antimonites, bismuthites, sulfites, selenites, tellurites, iodates)
J : Arsenites, antimonites, bismuthites, sulfites, selenites, tellurites; iodates
E : Sulfites
4 : OXIDES (Hydroxides, V[5,6] vanadates, arsenites, antimonites, bismuthites, sulfites, selenites, tellurites, iodates)
J : Arsenites, antimonites, bismuthites, sulfites, selenites, tellurites; iodates
E : Sulfites
Mineral Symbols
As of 2021 there are now IMAâCNMNC approved mineral symbols (abbreviations) for each mineral species, useful for tables and diagrams.
| Symbol | Source | Reference for Standard |
|---|---|---|
| Abt | IMAâCNMNC | Warr, L.N. (2021). IMAâCNMNC approved mineral symbols. Mineralogical Magazine, 85(3), 291-320. doi:10.1180/mgm.2021.43 |
Physical Properties of Albertiniite
Vitreous
Transparency:
Transparent
Colour:
Colorless to yellowish
Tenacity:
Brittle
Cleavage:
Perfect
{010}
{010}
Fracture:
Irregular/Uneven
Density:
2.458 g/cm3 (Calculated)
Optical Data of Albertiniite
Type:
Biaxial (+)
RI values:
nα = 1.612(2) nβ = 1.618(2) nγ = 1.632(2)
2V:
Measured: 40° , Calculated: 66°
Max. Birefringence:
δ = 0.020
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 Âĩm 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. Each grain retains its interference colour (retardation) while its brightness falls to black at extinction and reaches a maximum between extinction positions.
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 Âĩm 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. Each grain retains its interference colour (retardation) while its brightness falls to black at extinction and reaches a maximum between extinction positions.
Surface Relief:
High (positive)
Relative to Canada balsam mounting medium (n ≈ 1.537).
Relative to Canada balsam mounting medium (n ≈ 1.537).
This shows the grain boundary and Becke line effect under plane-polarised
light, based on the contrast between this mineral's average refractive
index and the mounting medium. It does not take into account mineral
colouration.
In focus
Interference Figure:
This shows the idealized biaxial acute bisectrix (Bxa) interference figure
- the conoscopic view for a grain cut perpendicular to the acute bisectrix, using
this mineral's 2V. The two small white dots mark the melatopes - the points
where the two optic axes emerge - and are shown only when they fall within the
field of view. The coloured bands are isochromatics, and the dark bands are
isogyres.
Rotate the stage: at 0°/90° the isogyres form a cross through the melatopes; at 45° they pull apart into curved hyperbolas. That splitting on rotation - absent in a uniaxial figure - is the standard diagnostic test for telling biaxial minerals from uniaxial ones. If 2V is large, the melatopes may fall outside the field of view, as they often do at the microscope too.
Rotate the stage: at 0°/90° the isogyres form a cross through the melatopes; at 45° they pull apart into curved hyperbolas. That splitting on rotation - absent in a uniaxial figure - is the standard diagnostic test for telling biaxial minerals from uniaxial ones. If 2V is large, the melatopes may fall outside the field of view, as they often do at the microscope too.
Pleochroism:
Non-pleochroic
Chemistry of Albertiniite
Mindat Formula:
Fe2+(SO3) · 3H2O
Element Weights:
Elements listed:
Common Impurities:
Mn
Crystallography of Albertiniite
Crystal System:
Monoclinic
Class (H-M):
2/m - Prismatic
Space Group:
P21/c
Setting:
P21/n
Cell Parameters:
a = 6.633(1) Å, b = 8.831(1) Å, c = 8.773(2) Å
β = 96.106(8)°
β = 96.106(8)°
Ratio:
a:b:c = 0.751 : 1 : 0.993
Unit Cell V:
510.97 Ã
Âģ (Calculated from Unit Cell)
Z:
4
X-Ray Powder Diffraction
Powder Diffraction Data:
| d-spacing | Intensity |
|---|---|
| 6.167 Ã | (14) |
| 5.533 Ã | (27) |
| 4.998 Ã | (14) |
| 4.721 Ã | (100) |
| 4.353 Ã | (13) |
| 3.897 Ã | (12) |
| 3.539 Ã | (94) |
| 2.830 Ã | (12) |
Geological Environment
Paragenetic Mode(s):
| Paragenetic Mode | Earliest Age (Ga) |
|---|---|
| Stage 7: Great Oxidation Event | <2.4 |
| 47b : [Sulfates and sulfites] |
Type Occurrence of Albertiniite
General Appearance of Type Material:
monoclinic prisms up to 0.7 mm across, sometimes showing rounded corners and edges.
Place of Conservation of Type Material:
Co-type material is deposited in the mineralogical collection of the Museo Civico di Storia Naturale, Milano, Italy (number MM 38728),and the Laboratory of Mineralogy, University of LiÃĻge, Belgium (number 20393)
Geological Setting of Type Material:
An intermediate product of oxidation between iron sulphides and sulphates in calcium rich base metal ore deposits.
Associated Minerals at Type Locality:
Synonyms of Albertiniite
Other Language Names for Albertiniite
Common Associates
Related Minerals - Strunz-mindat Grouping
| 4.JE. | Mikenewite | Mn2+(S4+O3) · 3H2O |
| 4.JE. | Vanpeltite | (Mo2O5)(S4+O3) · 4H2O |
| 4.JE.05 | Fleisstalite | FeSO3 · 3H2O |
| 4.JE.05 | Gravegliaite | Mn2+SO3 · 3H2O |
| 4.JE.10 | Hannebachite | CaSO3 · H2O |
| 4.JE.15 | Orschallite | Ca3(SO3)2(SO4) · 12H2O |
| 4.JE.20 | Scotlandite | PbSO3 |
| 4.JE.25 | Kollerite | (NH4)2Fe3+(SO3)2(OH) · H2O |
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 Albertiniite
mindat.org URL:
https://www.mindat.org/min-46619.html
Please feel free to link to this page.
Please feel free to link to this page.
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External Links:
Mineral Dealers:
References for Albertiniite
Reference List:
HÃĨlenius, U., Hatert, F., Pasero, M., Mills, S. J. (2015) New minerals and nomenclature modifications approved in 2015, CNMNC Newsletter No 25. Mineralogical Magazine, 79 (3) 529-535 doi:10.1180/minmag.2015.079.3.02
Vignola, P., Gatta, G. D., Rotiroti, N., Gentile, P., Hatert, F., Baijot, M., Bersani, D., Risplendente, A., Pavese, A. (2016) Albertiniite, Fe2+(SO3)·3H2O, a new sulfite mineral species from the Monte FalÃē Pb-Zn mine, Coiromonte, Armeno Municipality, Verbano Cusio Ossola Province, Piedmont, Italy. Mineralogical Magazine, 80 (6) 985-994 doi:10.1180/minmag.2016.080.033
Localities for Albertiniite
Showing 2 localities.
symbol to view information about a locality.
The Locality List
- This locality has map coordinates listed.
- This locality has estimated coordinates.
â - 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 +2 other references |
USA | |
| Varnedore Family Collection |
Quick NavTopAbout AlbertiniiteUnique IdentifiersIMA Classification Classification Mineral SymbolsPhysical Properties Optical Data Chemistry Crystallography X-Ray Powder DiffractionGeological EnvironmentType Occurrence SynonymsOther LanguagesCommon AssociatesStrunz-MindatOther InformationInternet Links References Localities Locality List
Monte FalÃē, Coiromonte, Armeno, Novara Province, Piedmont, Italy