Mindat Logo
Home Page Log In Message Board The Mindat Directory
Register Search Pages Chat Now! (5 online) Mindat Auctions

Mbobomkulite

Big Photo

Jomac Mine, White Canyon, White Canyon District, San Juan Co., Utah, USA
© Thomas Witzke

Show Mbobomkulite Photos (3)
Formula:
(Ni,Cu)Al
 
4
[(OH)
 
12
|{(NO
 
3
)
 
2
,SO
 
4
}] · 3H
 
2
O
System:Monoclinic
This page provides mineralogical data about Mbobomkulite.

Classification of Mbobomkulite

IMA status:Approved 1979
Strunz 8th edition ID:6/D.08-70
Nickel-Strunz 10th (pending) edition ID:5.ND.10

5 : CARBONATES (NITRATES)
N : NITRATES
D : With OH (etc.) and H2O
Dana 7th edition ID:19.2.4.1
Dana 8th edition ID:19.1.4.1

19 : NITRATES CONTAINING HYDROXYL OR HALOGEN
1 : Anhydrous Nitrates Containing Hydroxyl or Halogen
Hey's CIM Ref.:13.11

13 : Nitrates
mindat.org URL:http://www.mindat.org/min-2608.html
Please feel free to link to this page.

Type Occurrence of Mbobomkulite

Type Locality:Mbobo Mkulu Cave, Nelspruit District, Mpumalanga Province, South Africa
Year of Discovery:1980

Crystallography of Mbobomkulite

Crystal System:Monoclinic
Cell Parameters:a = 10.17Å, b = 8.86Å, c = 17.14Å
β = 95.37°
Ratio:a:b:c = 1.148 : 1 : 1.935
Unit Cell Volume:V 1,537.64 ų (Calculated from Unit Cell)

Optical Data of Mbobomkulite

Type:Biaxial
RI values: nα = 1.515 nγ = 1.585
Maximum Birefringence:δ = 0.070

Chart shows birefringence interference colour range (at 30µm thickness) and does not take into account mineral colouration.
Surface Relief:Moderate
Dispersion:relatively weak

Chemical Properties of Mbobomkulite

Formula:
(Ni,Cu)Al
 
4
[(OH)
 
12
|{(NO
 
3
)
 
2
,SO
 
4
}] · 3H
 
2
O
Essential elements:Al, H, N, Ni, O
All elements listed in formula:Al, Cu, H, N, Ni, O, S

Relationship of Mbobomkulite to other Species

Related Minerals - Nickel-Strunz Grouping):

- +
5.ND.05Likasite
Cu
 
3
[(OH)
 
5
|NO
 
3
] · 2H
 
2
O
5.ND.15Hydrombobomkulite
(Ni,Cu)Al
 
4
[(OH)
 
12
|{(NO
 
3
)
 
2
,SO
 
4
}] · 13-14H
 
2
O
5.ND.20Sveite
KAl
 
7
[Cl|(OH)
 
8
|(NO
 
3
)
 
2
]
 
2
 · 8H
 
2
O
Related Minerals - Hey's Index Grouping:

- +
13.1Nitratine
NaNO
 
3
13.2Niter
KNO
 
3
13.3Gerhardtite
Cu
 
2
[(OH)
 
3
|NO
 
3
]
13.4Nitromagnesite
Mg(NO
 
3
)
 
2
·6H
 
2
O
13.5Nitrocalcite
Ca(NO
 
3
)
 
2
·4H
 
2
O
13.6Nitrobarite
Ba(NO
 
3
)
 
2
13.7Buttgenbachite
Cu
 
19
[(OH)
 
32
|(NO
 
3
)
 
2
|Cl
 
4
] · 2H
 
2
O
13.8Sveite
KAl
 
7
[Cl|(OH)
 
8
|(NO
 
3
)
 
2
]
 
2
 · 8H
 
2
O
13.9Darapskite
Na
 
3
NO
 
3
SO
 
4
·H
 
2
O
13.10Humberstonite
Na
 
7
K
 
3
Mg
 
2
(SO
 
4
)
 
6
(NO
 
3
)
 
2
·6H
 
2
O
13.12Hydrombobomkulite
(Ni,Cu)Al
 
4
[(OH)
 
12
|{(NO
 
3
)
 
2
,SO
 
4
}] · 13-14H
 
2
O
13.13Nickelalumite
(Ni,Cu)Al
 
4
[(OH)
 
12
|{SO
 
4
,(NO
 
3
)
 
2
}] · 3H
 
2
O
Related Minerals - Dana Grouping):

- +
19.2.4.2Hydrombobomkulite
(Ni,Cu)Al
 
4
[(OH)
 
12
|{(NO
 
3
)
 
2
,SO
 
4
}] · 13-14H
 
2
O

Other Names for Mbobomkulite

Synonyms:
IMA1979-078
Other Languages:
German:Mbobomkulit
Spanish:Mbobomkulita

Other Information

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

References for Mbobomkulite

Reference List:Martini, J.E.J. (1980) Mbobomkulite, hydrombobomkulite, and nickelalumite, new minerals from Mbobo Mkulu cave, eastern Transvaal. Annals of the Geological Survey of South Africa: 14(2): 1-110 (see: American Mineralogist (1982): 67: 415-416).

American Mineralogist (1982): 67: 415-416).

Articles/Blogs about Mbobomkulite

Internet Links for Mbobomkulite

Search Engines:
  • Look for Mbobomkulite on Google
  • Look for Mbobomkulite images on Google
    • External Links:
  • Look for Mbobomkulite on Webmineral
  • Look for Mbobomkulite on Athena Mineralogy
  • Look for Mbobomkulite on Wikipedia
  • Look for Mbobomkulite on Mineralien Atlas
  • Raman and XRD data at RRUFF project
  • American Mineralogist Crystal Structure Database
  • Search for Mbobomkulite in the Natural History Museum (London) online catalogue
    • Mineral Dealers:
  • Find Mbobomkulite on www.crystalclassics.co.uk
  • Buy minerals from Mineralium.com
  • Wright's Rock Shop - excellent mineral specimens since 1970
  • Buy Fine Minerals from mineralsweb.com
  • Fine Minerals from Dan Weinrich Minerals
  • Buy from David K Joyce minerals
  • rare and unusual minerals mainly crystallized
  • Mineral Classics - Worldwide Collector Quality Minerals and Gems
  • Buy Minerals and Crystals from Crystalarium.com
  • Buy fine minerals and gemstones from Pala International
  • High-end worldwide specimens & outstanding customer service
  • The Arkenstone - Fine Minerals
    • Jobs:
  • Mining & Geology Jobs

    • Page Sponsor

    Sponsorship:This page is currently not sponsored. Click here to sponsor this page.

    Localities for Mbobomkulite

    (TL) indicates type locality. ? 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.
    South Africa
     
    • Mpumalanga Province
      • Nelspruit District
    		Ann.Geol.Surv.S.Africa,(1980) 14, n2, 1-110; Martini, J.E.J. et al (1997), "Mbobo Mkulu Cave, South Africa", in "Cave Minerals of the World" (1997)
    USA
     
    • Utah
      • San Juan Co.
        • White Canyon District
          • White Canyon
    		Can.Min.: (2001) 39( 6): 1685-1689.
    Mineral and/or Locality
    Google
     
    www.mindat.org Web
    Copyright © Jolyon & Ida Ralph 1993-2008. Site Map. Locality, mineral & photograph data are the copyright of the individuals who submitted them.Further information contact the Site hosted & developed by Jolyon Ralph. Mindat.org is an online information resource dedicated to providing free mineralogical information to all. Mindat relies on the contributions of hundreds of members and supporters. If you would like to add information to improve the quality of our database, then click here to register.