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Smamite

A valid IMA mineral species
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03329990017064701826297.jpg
Smamite

Giftgrube mine, Sankt Jakob vein, Neuenberg, Sainte-Marie-aux-Mines, Colmar-Ribeauvillé, Haut-Rhin, Grand Est, France
04661800017064701836853.jpg
Smamite

Giftgrube mine, Sankt Jakob vein, Neuenberg, Sainte-Marie-aux-Mines, Colmar-Ribeauvillé, Haut-Rhin, Grand Est, France
09599690017064701843536.jpg
Smamite

Giftgrube mine, Sankt Jakob vein, Neuenberg, Sainte-Marie-aux-Mines, Colmar-Ribeauvillé, Haut-Rhin, Grand Est, France
00459500017058451286797.jpg
Smamite

Giftgrube mine, Sankt Jakob vein, Neuenberg, Sainte-Marie-aux-Mines, Colmar-Ribeauvillé, Haut-Rhin, Grand Est, France
02445620017057015735083.jpg
Smamite

Giftgrube mine, Sankt Jakob vein, Neuenberg, Sainte-Marie-aux-Mines, Colmar-Ribeauvillé, Haut-Rhin, Grand Est, France
00622520017059881018743.jpg
Smamite

Giftgrube mine, Sankt Jakob vein, Neuenberg, Sainte-Marie-aux-Mines, Colmar-Ribeauvillé, Haut-Rhin, Grand Est, France
03329990017064701826297.jpg
Smamite

Giftgrube mine, Sankt Jakob vein, Neuenberg, Sainte-Marie-aux-Mines, Colmar-Ribeauvillé, Haut-Rhin, Grand Est, France
04661800017064701836853.jpg
Smamite

Giftgrube mine, Sankt Jakob vein, Neuenberg, Sainte-Marie-aux-Mines, Colmar-Ribeauvillé, Haut-Rhin, Grand Est, France
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About SmamiteHide

Formula:
Ca2Sb(OH)4[H(AsO4)2] · 6H2O
Colour:
Colorless to white
Lustre:
Vitreous
Hardness:
3½
Specific Gravity:
2.72
Crystal System:
Triclinic
Name:
The name is based on the acronym for its type locality, the Ste Marie-aux-Mines ore district, France.
New structure type.


Unique IdentifiersHide

Mindat ID:
53573
Long-form identifier:
mindat:1:1:53573:3
GUID
(UUID V4):
70bdb1a7-6b4c-4738-a2fa-035914846ee2

IMA Classification of SmamiteHide

Classification of SmamiteHide

Strunz-mindat (2024):
8.DD.30

8 : PHOSPHATES, ARSENATES, VANADATES
D : Phosphates, etc. with additional anions, with H2O
D : With only medium-sized cations, (OH, etc.):RO4= 2:1

Mineral SymbolsHide

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

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

Physical Properties of SmamiteHide

Lustre:
Vitreous
Transparency:
Transparent
Colour:
Colorless to white
Streak:
White
Hardness:
3½ on Mohs scale
Tenacity:
Brittle
Cleavage:
None Observed
Fracture:
Conchoidal
Density:
2.72(3) g/cm3 (Measured)    2.709 g/cm3 (Calculated)

Optical Data of SmamiteHide

Type:
Biaxial (-)
RI values:
nα = 1.556(1) nβ = 1.581(1) nγ = 1.588(1)
2V:
Measured: 54° (1), Calculated: 55.1°
Max Birefringence:
δ = 0.032
Image shows birefringence interference colour range (at 30µm thickness)
and does not take into account mineral colouration.
Surface Relief:
Moderate
Dispersion:
weak
Pleochroism:
Non-pleochroic

Chemistry of SmamiteHide

Mindat Formula:
Ca2Sb(OH)4[H(AsO4)2] · 6H2O
Elements listed:
As, Ca, H, O, Sb - search for minerals with similar chemistry

Crystallography of SmamiteHide

Crystal System:
Triclinic
Class (H-M):
1 - Pedial
Space Group:
P1
Cell Parameters:
a = 6.8207(4) Å, b = 8.0959(4) Å, c = 8.2130(6) Å
α = 95.834(7)°, β = 110.762(8)°, γ = 104.012(7)°
Ratio:
a:b:c = 0.842 : 1 : 1.014
Unit Cell V:
402.57 ų (Calculated from Unit Cell)
Z:
1

X-Ray Powder DiffractionHide

Powder Diffraction Data:
d-spacingIntensity
7.56 Å(41)
6.03 Å(60)
5.66 Å(47)
5.07 Å(100)
3.992 Å(43)
3.783 Å(36)
2.858 Å(51)
2.766 Å(31)
Comments:
From Type Description.

Geological EnvironmentHide

Paragenetic Mode(s):
Paragenetic ModeEarliest Age (Ga)
Stage 7: Great Oxidation Event<2.4
47a : [Near-surface hydration of prior minerals]
47d : [Arsenates, antimonates, selenates, bismuthinates]

Type Occurrence of SmamiteHide

Type Locality:
ⓘ Giftgrube mine, Sankt Jakob vein, Neuenberg, Sainte-Marie-aux-Mines, Colmar-Ribeauvillé, Haut-Rhin, Grand Est, France
General Appearance of Type Material:
Lenticular crystals growing to 0.5mm aggregates
Place of Conservation of Type Material:
In the collections of the Musée Cantonal de Géologie,
University of Lausanne, Switzerland, catalogue number MGL 093481 (holotype), 093482 and 093481 (cotypes), and the Natural History Museum of Los Angeles County Los Angeles, USA, catalogue number 67169 (cotype)
Associated Minerals at Type Locality:
QuartzPicropharmacolitePharmacoliteFluckiteDolomite
Calcite
Reference:
Plášil, J., Kampf, A.R., Meisser, N., Lheur, C., Brunsperger, T. and Škoda, R. (2020) Smamite, Ca2Sb(OH)4[H(AsO4)2]·6H2O, a new mineral and a possible sink for Sb during weathering of fahlore. American Mineralogist: 105: 555-560.

Synonyms of SmamiteHide

Related Minerals - Strunz-mindat GroupingHide

8.DD.Bettertonite[Al6(AsO4)3(OH)9(H2O)5] · 11H2OMon. 2/m : P21/b
8.DD.Penberthycroftite[Al6(AsO4)3(OH)9(H2O)5] · 8H2OMon. 2/m : P21/b
8.DD.VargiteCu2Mn3(AsO4)2(OH)4(H2O)4Mon. 2/m : P21/b
8.DD.GaleaclolusiteAl6(AsO4)3(OH)9(H2O)4 · 8H2OOrth. mmm (2/m 2/m 2/m) : Pnma
8.DD.05ChenevixiteCu2Fe3+2(AsO4)2(OH)4Mon. 2/m : P21/m
8.DD.05LuetheiteCu2Al2(AsO4)2(OH)4Mon. 2/m : P21/m
8.DD.10Akrochordite(Mn2+,Mg)5(AsO4)2(OH)4 · 4H2OMon. 2/m : P21/b
8.DD.10GuanacoiteCu2Mg3(AsO4)2(OH)4 · 4H2OMon. 2/m : P21/b
8.DD.15Aheylite(Fe2+,Zn)Al6(PO4)4(OH)8 · 4H2OTric. 1 : P1
8.DD.15ChalcosideriteCuFe3+6(PO4)4(OH)8 · 4H2OTric. 1 : P1
8.DD.15CoeruleolactiteTric. 1 : P1
8.DD.15FaustiteZnAl6(PO4)4(OH)8 · 4H2OTric. 1 : P1
8.DD.15PlaneriteAl6(PO4)2(PO3OH)2(OH)8 · 4H2OTric. 1 : P1
8.DD.15TurquoiseCuAl6(PO4)4(OH)8 · 4H2OTric. 1 : P1
8.DD.15AfmiteAl3(OH)4(H2O)3(PO4)(PO3OH) · H2OTric. 1 : P1
8.DD.15UM1981-32-PO:FeHFe2+Fe3+6(PO4)4-x[PO3(OH)]x(OH)8 · 4H2O
8.DD.20ChildreniteFe2+Al(PO4)(OH)2 · H2OOrth. mm2 : Ccc2
8.DD.20EosphoriteMn2+Al(PO4)(OH)2 · H2OOrth. mmm (2/m 2/m 2/m) : Cmca
8.DD.20Ernstite(Mn2+,Fe3+)Al(PO4)(OH,O)2 · H2OMon.
8.DD.20LefontiteFe2Al2Be(PO4)2(OH)6Orth. mmm (2/m 2/m 2/m) : Cmca
8.DD.25KobokoboiteAl6(PO4)4(OH)6 · 11H2O Tric.
8.DD.35GutsevichiteAl3(PO4)2(OH)3 · 8H2OIso.
8.DD.40Laubmannite (of Moore)(Fe3+,Fe2+,M)8+x(OH,H2O)9(H2O)2(PO4)5, M = Fe3+, Cu2+ or other metal cation, x ~ 0.1.Orth. mmm (2/m 2/m 2/m) : Pbcm

Other InformationHide

Notes:
Insoluble in water, readily soluble in 10% HCl solution.
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 SmamiteHide

References for SmamiteHide

Localities for SmamiteHide

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.
France (TL)
 
  • Grand Est
    • Haut-Rhin
      • Colmar-Ribeauvillé
        • Sainte-Marie-aux-Mines
          • Neuenberg
            • Sankt Jakob vein
Plášil et al. (2020) +1 other reference
Greece
 
  • Attica
    • East Attica
      • Lavreotiki
        • Lavrion mining district
          • Plaka
            • Plaka Mines
Rieck et al. (2022)
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