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Bassoite

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About BassoiteHide

Riccardo Basso
Formula:
SrV3O7·4H2O
Colour:
Black
Lustre:
Sub-Metallic
Hardness:
4 - 4½
Specific Gravity:
2.940 (Calculated)
Crystal System:
Monoclinic
Name:
In honour of Riccardo Basso (b. 1947), full professor of Mineralogy and Crystallography at the University of Genova.
This page provides mineralogical data about Bassoite.


Classification of BassoiteHide

Approved
Approval Year:
2011

Physical Properties of BassoiteHide

Sub-Metallic
Transparency:
Opaque
Colour:
Black
Streak:
Black
Hardness:
4 - 4½ on Mohs scale
Density:
2.940 g/cm3 (Calculated)

Optical Data of BassoiteHide

Type:
Anisotropic
Anisotropism:
Very weakly pleochroic
Bireflectance:
Weakly bireflectant
Colour in reflected light:
Grey to a dark green
Internal Reflections:
Absent

Chemical Properties of BassoiteHide

Formula:
SrV3O7·4H2O
IMA Formula:
SrV4+3O7 · 4H2O

Crystallography of BassoiteHide

Crystal System:
Monoclinic
Class (H-M):
2/m - Prismatic
Space Group:
P21/m
Cell Parameters:
a = 5.313(3) Å, b = 10.495(3) Å, c = 8.568(4) Å
β = 91.14(5)°
Ratio:
a:b:c = 0.506 : 1 : 0.816
Unit Cell V:
477.7 ų
Z:
2

X-Ray Powder DiffractionHide

Powder Diffraction Data:
d-spacingIntensity
8.5663 (100)
6.6363 (14)
3.4399 (14)
3.4049 (17)
2.8339 (15)
2.7949 (11)
2.6550 (15)
2.6237 (11)
1.8666 (15)

Type Occurrence of BassoiteHide

General Appearance of Type Material:
Black euhedral to subhedral grains up to 400 μm across.
Associated Minerals at Type Locality:

Synonyms of BassoiteHide

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 BassoiteHide

Reference List:
Sort by Year (asc) | by Year (desc) | by Author (A-Z) | by Author (Z-A)
Bindi, L., Carbone, C., Cabella, R., Lucchetti, G. (2011): Bassoite, SrV3O7·4H2O, a new mineral from Molinello mine, Val Graveglia, eastern Liguria, Italy. Mineralogical Magazine, 75, 2677-2686.

Internet Links for BassoiteHide

Localities for BassoiteHide

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.
Italy (TL)
 
  • Liguria
    • Genova Province
      • Ne
        • Graveglia Valley
http://www.geoitalia.org/index.php?action=folder_list〈=it&folder_id=310; Bindi, L., Carbone, C., Cabella, R., Lucchetti, G. (2011): Bassoite, SrV3O7·4H2O, a new mineral from Molinello mine, Val Graveglia, eastern Liguria, Italy. Mineralogical Magazine, 75, 2677-2686.
Mineral and/or Locality  
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