General Information:
Chemical Formula:
(Ni,Cu)Al4(NO3,SO4)2(OH)12·3(H2O)
Composition:
(Molecular Weight = 459.08 gm)
Copper 3.46 % Cu
Nickel 9.59 % Ni
Hydrogen 3.95 % H
Sulfur 3.49 % S
Nitrogen 4.58 % N
Oxygen 74.93 % O
Empirical Formula:
Ni0.75Cu0.25(NO3)1.5(SO4)0.5(OH)12·3(H2O)
Environment:
Friable nodules in allophane after rapid dehydration from hydrombobomkulite.
IMA Status:
Approved IMA 1980
Locality:
Mbobo Mkulu cave, Nelspruit district, South Africa.
Name Origin:
Named for the locality.
Physical Properties:
Cleavage:
[001] Perfect
Color:
sky blue.
Density:
2.3
Habits:
Powdery - Forms a loose, poorly-coherent pulverulent mass., Nodular - Tuberose forms having irregular protuberances over the surface.,
Streak:
light blue
More details...