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Greenwoodite

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Formula:
(Ba,V3+O)2V3+9(Fe3+,Fe2+)2Si2O22
Hardness:
5
Specific Gravity:
4.81 (Calculated)
Crystal System:
Trigonal
Name:
Named in honor of Hugh J. Greenwood, Canadian mineralogist, former Professor of Mineralogy, University of British Columbia, Vancouver, Canada.
This page provides mineralogical data about Greenwoodite.


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Classification of GreenwooditeHide

Approved
Approval Year:
2010

Physical Properties of GreenwooditeHide

Hardness:
Density:
4.81 g/cm3 (Calculated)

Chemical Properties of GreenwooditeHide

Formula:
(Ba,V3+O)2V3+9(Fe3+,Fe2+)2Si2O22
IMA Formula:
Ba2-x(V3+OH)xV3+9(Fe3+,Fe2+)2Si2O22

Crystallography of GreenwooditeHide

Crystal System:
Trigonal
Class (H-M):
3m (3 2/m) - Hexagonal Scalenohedral
Space Group:
P3m1
Setting:
P3m1
Cell Parameters:
a = 5.7500(6) Å, c = 14.4590(9) Å
Ratio:
a:c = 1 : 2.515
Unit Cell V:
414.00 ų (Calculated from Unit Cell)
Morphology:
A semi-prismatic to tabular habit.

X-Ray Powder DiffractionHide

Powder Diffraction Data:
d-spacingIntensity
2.925 (100)
2.875 (38)
2.672 (23)
2.469 (35)
2.354 (28)
2.212 (28)
1.669 (26)
1.438 (35)

Type Occurrence of GreenwooditeHide

Place of Conservation of Type Material:
American Museum of Natural History, New York, NY, catalog no. 109839
Associated Minerals at Type Locality:

Synonyms of GreenwooditeHide

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 GreenwooditeHide

Reference List:
Sort by Year (asc) | by Year (desc) | by Author (A-Z) | by Author (Z-A)
Bartholomew, P.R., Mancini, P., Harlow, G.E., Deifel, N., Cahill, C., Bernhardt, H.-J. (2012) Greenwoodite, a new nesosilicate from British Columbia with a Ba-VOH coupled substitution and tetrahedral Fe: description and structure. Canadian Mineralogist, 50, 1233-1242.

Internet Links for GreenwooditeHide

Localities for GreenwooditeHide

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.
Canada (TL)
 
  • British Columbia
    • Revelstoke Mining Division
Bartholomew, P.R., Mancini, P., Harlow, G.E., Deifel, N., Cahill, C., Bernhardt, H.-J. (2012) Greenwoodite, a new nesosilicate from British Columbia with a Ba-VOH coupled substitution and tetrahedral Fe: description and structure. Canadian Mineralogist, 50, 1233-1242.
Mineral and/or Locality  
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