Mineralogy Database

Hydrombobomkulite Mineral Data

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General Hydrombobomkulite Information

Help on Chemical  Formula: Chemical Formula: (Ni,Cu)Al4(NO3,SO4)2(OH)12•14(H2O)
Help on Composition: Composition: Molecular Weight = 765.17 gm
   Aluminum  14.10 %  Al   26.65 % Al2O3
   Copper     2.08 %  Cu    2.60 % CuO
   Nickel     5.75 %  Ni    7.32 % NiO
   Hydrogen   5.27 %  H    47.09 % H2O
   Sulfur     2.10 %  S     5.23 % SO3
   Nitrogen   2.75 %  N    10.59 % N2O5
   Oxygen    67.96 %  O
            ______        ______ 
            100.00 %       99.48 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: Ni0.75Cu0.25Al4(NO3)1.5(SO4)0.5(OH)12•14(H2O)
Help on Environment: Environment: Friable nodules in allophane before rapid dehydration to mbobomkulite.
Help on IMA Status: IMA Status: Approved IMA 1980
Help on Locality: Locality: Mbobo Mkulu cave, Nelspruit district, South Africa. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named as the hydrated version of mbobomkulite.
Help on Name Pronunciation: Name Pronunciation: Hydrombobomkulite + Pronunciation Say HYDROMBOBOMKULITE

Hydrombobomkulite Crystallography

Help on Axial Ratios: Axial Ratios: a:b:c =0.5913:1:1.2165
Help on Cell Dimensions: Cell Dimensions: a = 10.145, b = 17.155, c = 20.87, Z = 8; beta = 90.55° V = 3,632.00 Den(Calc)= 2.80
Help on Crystal System: Crystal System: Monoclinic Space Group: Unk
Help on X Ray Diffraction: X Ray Diffraction: By Intensity(I/Io): 10.45(1), 5.229(0.5), 3.485(0.3),

Physical Properties of Hydrombobomkulite

Help on Cleavage: Cleavage: {001} Perfect
Help on Color: Color: Sky blue.
Help on Habit: Habit: Nodular - Tuberose forms having irregular protuberances over the surface.
Help on Habit: Habit: Powdery - Forms a loose, poorly-coherent pulverulent mass.
Help on Streak: Streak: light blue

Optical Properties of Hydrombobomkulite

Help on Optical Data: Optical Data: Biaxial (?)
  NCalc= 1.75 - from Gladstone-Dale relationship (KC = 0.2675) where Ncalc=Dcalc*KC+1

Calculated Properties of Hydrombobomkulite

Help on Electron Density: Electron Density: Bulk Density (Electron Density)=2.92 gm/cc
note: Specific Gravity of Hydrombobomkulite =2.80 gm/cc.
Help on Fermion Index: Fermion Index: Fermion Index = 0.02
Boson Index = 0.98
Help on Photoelectric: Photoelectric: PEHydrombobomkulite = 3.71 barns/electron
U=PEHydrombobomkulite x rElectron Density= 10.83 barns/cc.
Help on Radioactivity: Radioactivity: GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Hydrombobomkulite is Not Radioactive

Hydrombobomkulite Classification

Help on  Dana Class: Dana Class: (19)Nitrates - Hydroxyl or Halogen
  (19.01)with miscellaneous formulae
  (19.01.04)Mbobomkulite Group Mbobomkulite (Ni,Cu)Al4(NO3,SO4)2(OH)12•3(H2O) P 21 2 Hydrombobomkulite (Ni,Cu)Al4(NO3,SO4)2(OH)12•14(H2O) Unk Mono
Help on  Strunz Class: Strunz Class: 05.ND.15 05 - CARBONATES (NITRATES)
  05.ND -With OH (etc.) and H2O
05.ND.15 Hydrombobomkulite (Ni,Cu)Al4(NO3,SO4)2(OH)12•14(H2O) Unk Mono

Other Hydrombobomkulite Information

Help on References: References: NAME( Dana8) PHYS. PROP.(Dana8)
Help on See Also: See Also: Links to other databases for Hydrombobomkulite :
1 - Am. Min. Crystal Structure Database
2 - Athena
3 - EUROmin Project
4 - Ecole des Mines de Paris
5 - GeoScienceWorld
6 - Google Images
7 - Google Scholar
8 - Handbook of Mineralogy (MinSocAm)
9 - Handbook of Mineralogy (UofA)
10 - MinDAT
11 - Mineralienatlas (Deutsch)
12 - Online Mineral Museum
13 - QUT Mineral Atlas
14 - Ruff.Info

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Dana No: Strunz No: 05.ND.15