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Vendidaite

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About VendidaiteHide

Formula:
Al2(SO4)(OH)3Cl·6H2O
Colour:
Colorless
Hardness:
2 - 2½
Specific Gravity:
1.97
Crystal System:
Monoclinic
Name:
For the type locality of La Vendida Mine, Chile.
This page provides mineralogical data about Vendidaite.


Classification of VendidaiteHide

Approved

Physical Properties of VendidaiteHide

Colour:
Colorless
Hardness:
2 - 2½ on Mohs scale
Hardness Data:
Estimated
Tenacity:
Brittle
Cleavage:
Perfect
on (010)
Density:
1.97(1) g/cm3 (Measured)    1.974 g/cm3 (Calculated)

Optical Data of VendidaiteHide

Type:
Biaxial (+)
RI values:
nα = 1.522(2) nβ = 1.524(2) nγ = 1.527(2)
2V:
Calculated: 79°
Max Birefringence:
δ = 0.005
Image shows birefringence interference colour range (at 30µm thickness)
and does not take into account mineral colouration.
Surface Relief:
Low

Chemical Properties of VendidaiteHide

Formula:
Al2(SO4)(OH)3Cl·6H2O
IMA Formula:
Al2(SO4)(OH)3Cl · 6H2O

Crystallography of VendidaiteHide

Crystal System:
Monoclinic
Class (H-M):
2/m - Prismatic
Space Group:
B2/b
Setting:
C2/c
Cell Parameters:
a = 11.9246(16) Å, b = 16.134(2) Å, c = 7.4573(9) Å
γ = 125.815(2)°
Ratio:
a:b:c = 0.739 : 1 : 0.462

Warning: deg2rad() expects parameter 1 to be float, string given in /home/mindat/www/include.php on line 9251
Unit Cell V:
0.00 ų (Calculated from Unit Cell)
Z:
4

X-Ray Powder DiffractionHide

Powder Diffraction Data:
d-spacingIntensity
6.78(59)
4.849(94)
4.366(80)
4.030(75)
3.855(100)
3.745(43)
2.764(45)
2.435(52)
Comments:
From Type Description.

Type Occurrence of VendidaiteHide

General Appearance of Type Material:
Platy crystals up to 0.01 × 0.3 × 0.3 mm.
Place of Conservation of Type Material:
Type material is deposited in the collections of the Fersman Mineralogical Museum of the Russian Academy of Sciences, Moscow, Russia, registration number 4335/1
Associated Minerals at Type Locality:

Synonyms of VendidaiteHide

Other InformationHide

Health Risks:
No information on health risks for this material has been entered into the database. You should always treat mineral specimens with care.

References for VendidaiteHide

Reference List:
Sort by Year (asc) | by Year (desc) | by Author (A-Z) | by Author (Z-A)
Chukanov, N.V., Krivovichev, S.V., Chernyatieva, A.P., Möhn, G., Pekov, I.V., Belakovskiy, D.I., Van, K.V. Lorenz, J.A. (2013) Vendidaite, IMA 2012-089. CNMNC Newsletter No. 16, August 2013, page 2697; Mineralogical Magazine: 77: 2695-2709.
Chukanov, N.V., Krivovichev, S.V., Chernyatieva, A.P., Mohn, G., Pekov, I.V., Belakovskiy, D.I., Van, K.V., Lorenz, J.A. (2013) Vendidaite, Al2(SO4)(OH)3Cl·6H2O, a new mineral from La vendida copper mine, Antofagasta Region, Chile. Canadian Mineralogist: 51: 559-568.

Internet Links for VendidaiteHide

Localities for VendidaiteHide

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 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 (eg from pseudomorphs.)

All localities listed without proper references should be considered as questionable.
Chile (TL)
 
  • Antofagasta Region
    • Antofagasta Province
      • Sierra Gorda District
Chukanov, N.V., Krivovichev, S.V., Chernyatieva, A.P., Mohn, G., Pekov, I.V., Belakovskiy, D.I., Van, K.V., Lorenz, J.A. (2013): Vendidaite, Al2(SO4)(OH)3Cl·6H2O, a new mineral from La vendida copper mine, Antofagasta Region, Chile. Canadian Mineralogist. 51, 559-568.
Mineral and/or Locality  
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