LIVE REPORT! Gold and Silver Deposits in Colorado Symposium 2017 - last updated 16 minutes ago. Click here to watch.
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 ArticlesSearch GlossaryMore Search Options
Search For:
Mineral Name:
Locality Name:
Keyword(s):
 
The Mindat ManualAdd a New PhotoRate PhotosLocality Edit ReportCoordinate Completion ReportAdd Glossary Item
StatisticsThe ElementsMember 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

Kolwezite

This page is currently not sponsored. Click here to sponsor this page.
Formula:
(Cu,Co)2(CO3)(OH)2
System:
Triclinic
Hardness:
4
Probably Rosasite Group.


Classification of Kolwezite

Approved
5.BA.10

5 : CARBONATES (NITRATES)
B : Carbonates with additional anions, without H2O
A : With Cu, Co, Ni, Zn, Mg, Mn
16a.3.1.7

16a : ANHYDROUS CARBONATES CONTAINING HYDROXYL OR HALOGEN
3 : (AB)2(XO3)Zq
11.14.2

11 : Carbonates
14 : Carbonates of Co and Ni

Physical Properties of Kolwezite

Hardness (Mohs):
4

Optical Data of Kolwezite

Type:
Biaxial
RI values:
nα = 1.688 nγ = 1.900
Max Birefringence:
δ = 0.212
Image shows birefringence interference colour range (at 30µm thickness) and does not take into account mineral colouration.
Surface Relief:
Moderate
Dispersion:
r > v weak

Chemical Properties of Kolwezite

Formula:
(Cu,Co)2(CO3)(OH)2
IMA Formula:
CuCoCO3(OH)2
Elements listed in formula:

Crystallography of Kolwezite

Crystal System:
Triclinic
Cell Parameters:
a = 9.5 Å, b = 12.15 Å, c = 3.18 Å
α = 93.32°, β = 90.74°, γ = 91.47°
Ratio:
a:b:c = 0.782 : 1 : 0.262
Unit Cell Volume:
V 366.28 ų (Calculated from Unit Cell)

Type Occurrence of Kolwezite

Relationship of Kolwezite to other Species

5.BA.05AzuriteCu3(CO3)2(OH)2
5.BA.10GeorgeiteCu2(CO3)(OH)2 · 6H2O
5.BA.10Glaukosphaerite(Cu,Ni)2(CO3)(OH)2
5.BA.10MalachiteCu2(CO3)(OH)2
5.BA.10Mcguinnessite(Mg,Cu)2(CO3)(OH)2
5.BA.10NullaginiteNi2(CO3)(OH)2
5.BA.10PokrovskiteMg2(CO3)(OH)2
5.BA.10Rosasite(Cu,Zn)2(CO3)(OH)2
5.BA.10Zincrosasite(Zn,Cu)2(CO3)(OH)2
5.BA.10ChukanoviteFe22+(CO3)(OH)2
5.BA.15Aurichalcite(Zn,Cu)5(CO3)2(OH)6
5.BA.15HydrozinciteZn5(CO3)2(OH)6
5.BA.20HoldawayiteMn6(CO3)2(OH)7(Cl,OH)
5.BA.25DeferniteCa6(CO3)2-x(SiO4)x(OH)7(Cl,OH)1-2x (x<0.5)
5.BA.25UM1977-03-COSiO:CaClHCa10-11(CO3)7(SiO4)Cl1-2(OH)1-2
5.BA.30Loseyite(Mn2+,Zn,Mg)4Zn3(CO3)2(OH)10
5.BA.30Sclarite(Zn,Mg,Mn2+)4Zn3(CO3)2(OH)10
11.14.1SpherocobaltiteCoCO3
11.14.3NullaginiteNi2(CO3)(OH)2
11.14.4HellyeriteNiCO3 · 5.5H2O
11.14.5OtwayiteNi2(CO3)(OH)2 · H2O
11.14.6ZaratiteNi3(CO3)(OH)4 · 4H2O ?
11.14.7KambaldaiteNaNi4(CO3)3(OH)3 · 3H2O
11.14.8Glaukosphaerite(Cu,Ni)2(CO3)(OH)2
11.14.9GaspéiteNi(CO3)
11.14.10ReevesiteNi6Fe23+(OH)16(CO3) · 4H2O
11.14.11ComblainiteNi4Co2(OH)12[CO3] · 3H2O
11.14.12SzymańskiiteHg16(Ni,Mg)6(CO3)12(OH)12(H3O)8•3H2O

Other Names for Kolwezite

Name in Other Languages:

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 Kolwezite

Reference List:
American Mineralogist (1980): 65: 1067.

Bulletin de Mineralogie (1980): 103: 179-184.

Perchiazzi, N. & Merlino, S. (2006): The malachite-rosasite group: crystal structures of glaukosphaerite and pokrovskite. European Journal of Mineralogy, 18, 787-792. [with comments on probable structure of kolwezite]

Internet Links for Kolwezite

mindat.org URL:
https://www.mindat.org/min-2243.html
Please feel free to link to this page.

Localities for Kolwezite

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.
(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.
Democratic Republic of Congo (Zaïre)
 
  • Katanga (Shaba)
    • Katanga Copper Crescent
Paul De Bondt
      • Kolwezi District
        • Kamoto
Herve Osana photo
Gauthier, G. & Deliens, M. (1999): Cobalt minerals of the Katanga Crescent, Congo. Mineralogical Record 30 (4): 255-273
        • Kolwezi
No reference listed
Bull.Minéral.(1980) 103, 179-184
[MinRec 22:13-20,28]
Gauthier, G. & Deliens, M. (1999): Cobalt minerals of the Katanga Crescent, Congo. Mineralogical Record 30 (4): 255-273
Germany
 
  • North Rhine-Westphalia
    • Niederberg area
      • Wülfrath
        • Rohdenhaus
Schnorrer-Köhler, G. (1991): Mineralogische Notizen V. Aufschluss 42, 155-171.
Greece
 
  • Attikí Prefecture (Attica; Attika)
    • Lavrion District (Laurion; Laurium)
      • Lavrion District Mines
        • Agios Konstantinos [St Constantine] (Kamariza)
Katerinopoulos, A. (1996): Bisher nicht bekannte Minerale aus den Lavrion-Bergwerken. Lapis, 21 (11), 39; 62.
USA
 
  • Colorado
    • Hinsdale Co.
Minerals of Colorado (1997)
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 1993-2017, 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: July 22, 2017 23:52:01 Page generated: July 18, 2017 03:24:33
Go to top of page