Help mindat.org|Log In|Register|
Home PageMindat NewsThe Mindat ManualHistory of MindatCopyright StatusManagement TeamContact UsAdvertise on Mindat
Donate to MindatSponsor a PageSponsored PagesTop Available PagesMindat AdvertisersAdvertise on MindatThe Mindat Store
Minerals by PropertiesMinerals by ChemistryRandom MineralSearch by minIDLocalities Near MeSearch GlossaryMore Search Options
Search For:
Mineral Name:
Locality Name:
Keyword(s):
 
The Mindat ManualAdd a New PhotoRate PhotosLocality Edit ReportAdd Glossary Item
StatisticsMember ListBooks & MagazinesMineral Shows & EventsThe Mindat DirectoryHow to Link to MindatDevice Settings
Photo SearchPhoto GalleriesNew Photos TodayNew Photos YesterdayMembers' Photo GalleriesPast Photo of the Day Gallery

Calvertite

This page is currently not sponsored. Click here to sponsor this page.
Formula:
Cu5Ge0.5S4
System:
Isometric
Colour:
Black
Hardness:
4 - 5
Name:
Named in honor of Lauriston D. Calvert (1924-1993) of the National Research Council, Ottawa, Canada.
This page provides mineralogical data about Calvertite.

Classification of Calvertite

Approved 2006
2.CA.15

2 : SULFIDES and SULFOSALTS (sulfides, selenides, tellurides; arsenides, antimonides, bismuthides; sulfarsenites, sulfantimonites, sulfbismuthites, etc.)
C : Metal Sulfides, M: S = 1: 1 (and similar)
A : With Cu
2.5.2.2

2 : SULFIDES
5 : AmBnXp, with (m+n):p = 3:2
mindat.org URL:
http://www.mindat.org/min-30904.html
Please feel free to link to this page.

Type Occurrence of Calvertite

Geological Setting of Type Material:
Oxidized germanium rich ore

Physical Properties of Calvertite

Metallic
Diaphaneity (Transparency):
Opaque
Colour:
Black
Streak:
Black
Hardness (Mohs):
4 - 5
Hardness (Vickers):
VHN25=368 kg/mm2
Tenacity:
Brittle
Cleavage:
None Observed
Density:
5.239 g/cm3 (Calculated)

Crystallography of Calvertite

Crystal System:
Isometric
Class (H-M):
4 3m - Hextetrahedral
Space Group:
F4 3m
Cell Parameters:
a = 5.3365Å
Unit Cell Volume:
V 151.97 ų (Calculated from Unit Cell)
X-Ray Powder Diffraction Data:
d-spacingIntensity
3.053 (100)
2.639 (10)
1.869 (90)
1.595 (30)

Optical Data of Calvertite

Type:
Isotropic
Colour in reflected light:
PALE BLUE GRAY
Pleochroism:
Non-pleochroic

Chemical Properties of Calvertite

Formula:
Cu5Ge0.5S4
Essential elements:
All elements listed in formula:

Relationship of Calvertite to other Species

2.CA.05aCovelliteCuS
2.CA.05bKlockmanniteCuSe
2.CA.05cSpionkopiteCu39S28
2.CA.05dYarrowiteCu9S8
2.CA.10NukundamiteCu3.4Fe0.6S4

Other Names for Calvertite

Name in Other Languages:
Simplified Chinese:卡硫锗铜矿

Other Information

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 Calvertite

Reference List:
Jambor, J.L., Roberts, A.C., Groat, L.A., Stanley, C.J., Criddle, A.J., Feinglos, M.N. (2007): Calvertite, Cu5Ge0.5S4, a new mineral species from Tsumeb, Namibia. Canadian Mineralogist, 45, 1519-1523.

Internet Links for Calvertite

Localities for Calvertite

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.
(TL) indicates type locality for a valid mineral species. (FRL) indicates first recorded locality for everything else. ? indicates mineral may be doubtful at this locality. All other localities listed without reference should be considered as uncertain and unproven until references can be found.
Namibia (TL)
 
  • Otjikoto Region (Oshikoto)
    • Tsumeb
Jambor, J.L., Roberts, A.C., Groat, L.A., Stanley, C.J., Criddle, A.J., Feinglos, M.N. (2007): Calvertite, Cu5Ge0.5S4, a new mineral species from Tsumeb, Namibia. Canadian Mineralogist, 45, 1519-1523
Mineral and/or Locality  
Mindat.org is an outreach project of the Hudson Institute of Mineralogy, a 501(c)(3) not-for-profit organization.
Copyright © mindat.org and the Hudson Institute of Mineralogy 1993-2015, except where stated. Mindat.org relies on the contributions of thousands of members and supporters.
Privacy Policy - Terms & Conditions - Contact Us Current server date and time: May 27, 2015 19:06:48 Page generated: May 26, 2015 13:56:13