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Gravegliaite

A valid IMA mineral species
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About GravegliaiteHide

Formula:
Mn2+SO3 · 3H2O
Colour:
Colorless
Lustre:
Vitreous
Specific Gravity:
2.39 (Calculated)
Crystal System:
Orthorhombic
Name:
Named for the Graveglia Valley, Italy, where the type locality is found.
Dimorph of:
Stoichiometry similar to that of albertiniite, an iron sulfite trihydrate, but different structure.


Unique IdentifiersHide

Mindat ID:
1742
Long-form identifier:
mindat:1:1:1742:4
GUID
(UUID V4):
eb84c959-6273-47a3-b90c-5a7a23e10e34

Classification of GravegliaiteHide

Approved
Approval year:
1990
First published:
1991
4.JE.05

4 : OXIDES (Hydroxides, V[5,6] vanadates, arsenites, antimonites, bismuthites, sulfites, selenites, tellurites, iodates)
J : Arsenites, antimonites, bismuthites, sulfites, selenites, tellurites; iodates
E : Sulfites
Dana 7th ed.:
34.2.4.2
34.2.5.2

34 : SELENITES, TELLURITES AND SULFITES
2 : A(XO3)·xH2O
27.1.3

27 : Sulphites, Chromates, Molybdates and Tungstates
1 : Sulphites

Mineral SymbolsHide

As of 2021 there are now IMA–CNMNC approved mineral symbols (abbreviations) for each mineral species, useful for tables and diagrams.

SymbolSourceReference
GvgIMA–CNMNCWarr, L.N. (2021). IMA–CNMNC approved mineral symbols. Mineralogical Magazine, 85(3), 291-320. doi:10.1180/mgm.2021.43

Physical Properties of GravegliaiteHide

Vitreous
Transparency:
Transparent
Colour:
Colorless
Streak:
White
Cleavage:
Distinct/Good
Parallel to [010].
Fracture:
None observed
Density:
2.39 g/cm3 (Calculated)

Optical Data of GravegliaiteHide

Type:
Biaxial (+)
RI values:
nα = 1.590(2) nβ = 1.596(2) nγ = 1.636(2)
2V:
Measured: 41° (3), Calculated: 43°
Max Birefringence:
δ = 0.046
Image shows birefringence interference colour range (at 30µm thickness)
and does not take into account mineral colouration.
Surface Relief:
Moderate
Dispersion:
r > v distinct
Optical Extinction:
Z = b.
Pleochroism:
Non-pleochroic

Chemical Properties of GravegliaiteHide

Formula:
Mn2+SO3 · 3H2O
IMA Formula:
Mn2+(S4+O3) · 3H2O

Crystallography of GravegliaiteHide

Crystal System:
Orthorhombic
Class (H-M):
mmm (2/m 2/m 2/m) - Dipyramidal
Space Group:
Pnma
Setting:
Pnma
Cell Parameters:
a = 9.763(1) Å, b = 5.635(1) Å, c = 9.558(1) Å
Ratio:
a:b:c = 1.733 : 1 : 1.696
Unit Cell V:
525.83 ų (Calculated from Unit Cell)
Z:
4

Crystal StructureHide

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IDSpeciesReferenceLinkYearLocalityPressure (GPa)Temp (K)
0011006GravegliaiteBasso R, Lucchetti G, Palenzona A (1991) Gravegliaite, MnSO3*3H2O, a new mineral from Val Graveglia (Northern Apennines, Italy) Zeitschrift fur Kristallographie 197 97-1061991Gambatesa mine, Val Graveglia, Northern Apennines, Italy0293
CIF Raw Data - click here to close

X-Ray Powder DiffractionHide

Powder Diffraction Data:
d-spacingIntensity
4.33 Å(Very strong)
3.43 Å(Very strong)
6.83 Å(Strong)
2.704 Å(Medium)
2.666 Å(Medium)
2.414 Å(Medium)
1.726 Å(Medium)

Geological EnvironmentHide

Paragenetic Mode(s):

Type Occurrence of GravegliaiteHide

General Appearance of Type Material:
Radial aggregates of prismatic crystals, elongated parallel to [010] and up to 0.5 mm long.
Place of Conservation of Type Material:
Department of Earth Sciences, University of Genoa, Genoa, Ital
Geological Setting of Type Material:
Ophiolite sequence.
Associated Minerals at Type Locality:
Reference:
Basso, R., Lecchetti, G., Palenzona, A. (1991) Gravegliaite, MnSO3·3H2O, a new mineral from Val Graveglia (Northern Apennines, Italy). Zeitschrift für Kristallographie: 197: 97-106.

Synonyms of GravegliaiteHide

Other Language Names for GravegliaiteHide

Related Minerals - Strunz-mindat GroupingHide

4.JE.XAlbertiniiteFe2+(SO3) · 3H2OMon. 2/m
4.JE.MikenewiteMn2+(S4+O3) · 3H2OMon. 2/m
4.JE.05FleisstaliteFeSO3 · 3H2OOrth. mmm (2/m 2/m 2/m) : Pnma
4.JE.10HannebachiteCaSO3 · H2OOrth. mmm (2/m 2/m 2/m)
4.JE.15OrschalliteCa3(SO3)2(SO4) · 12H2OTrig. 3m (3 2/m) : R3c
4.JE.20ScotlanditePbSO3Mon. 2/m : P21/m
4.JE.25Kollerite(NH4)2Fe3+(SO3)2(OH) · H2OOrth. mmm (2/m 2/m 2/m) : Cmcm

Other InformationHide

Notes:
Insoluble in water and in ethyl alcohol, soluble in strong acids.
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 GravegliaiteHide

References for GravegliaiteHide

Reference List:

Localities for GravegliaiteHide

This map shows a selection of localities that have latitude and longitude coordinates recorded. Click on the symbol to view information about a locality. The symbol next to localities in the list can be used to jump to that position on the map.

Locality ListHide

- 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). Struck out - Mineral was erroneously reported from this locality. Faded * - Never found at this locality but inferred to have existed at some point in the past (e.g. from pseudomorphs).

All localities listed without proper references should be considered as questionable.
Italy (TL)
 
  • Liguria
    • Genoa
      • Ne
        • Reppia
Luxembourg
 
  • Canton Clervaux
    • Wincrange
Tanzania
 
  • Manyara Region
    • Simanjiro District
      • Lelatema Mountains
 
Mineral and/or Locality  
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