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Hydrombobomkulite Mineral Data
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General Hydrombobomkulite Information
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 Chemical Formula: |
(Ni,Cu)Al4(NO3,SO4)2(OH)12•14(H2O) |
| Composition: |
Molecular Weight = 765.17 gm |
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Aluminum 14.10 % Al 26.65 % Al2O3 |
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Copper 2.08 % Cu 2.60 % CuO |
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Nickel 5.75 % Ni 7.32 % NiO |
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Hydrogen 5.27 % H 47.09 % H2O |
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Sulfur 2.10 % S 5.23 % SO3 |
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Nitrogen 2.75 % N 10.59 % N2O5 |
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Oxygen 67.96 % O |
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______ ______ |
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100.00 % 99.48 % = TOTAL OXIDE |
| Empirical Formula: |
Ni0.75Cu0.25Al4(NO3)1.5(SO4)0.5(OH)12•14(H2O) |
| Environment: |
Friable nodules in allophane before rapid dehydration to mbobomkulite. |
| IMA Status: |
Approved IMA 1980 |
| Locality: |
Mbobo Mkulu cave, Nelspruit district, South Africa. Link to MinDat.org Location Data. |
| Name Origin: |
Named as the hydrated version of mbobomkulite. |
| Name Pronunciation: |
Hydrombobomkulite + Pronunciation  |
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Hydrombobomkulite Crystallography
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| Axial Ratios: |
a:b:c =0.5913:1:1.2165 |
| Cell Dimensions: |
a = 10.145, b = 17.155, c = 20.87, Z = 8; beta = 90.55° V = 3,632.00 Den(Calc)= 2.80 |
| Crystal System: |
Monoclinic Space Group: Unk |
| X Ray Diffraction: |
By Intensity(I/Io): 10.45(1), 5.229(0.5), 3.485(0.3), |
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Physical Properties of Hydrombobomkulite
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| Cleavage: |
{001} Perfect |
| Color: |
Sky blue. |
| Habit: |
Nodular - Tuberose forms having irregular protuberances over the surface. |
| Habit: |
Powdery - Forms a loose, poorly-coherent pulverulent mass. |
| Streak: |
light blue |
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Optical Properties of Hydrombobomkulite
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| Optical Data: |
Biaxial (?) |
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NCalc= 1.75 - from Gladstone-Dale relationship (KC = 0.2675) where Ncalc=Dcalc*KC+1
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Calculated Properties of Hydrombobomkulite
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| Electron Density: |
Bulk Density (Electron Density)=2.92 gm/cc
note: Specific Gravity of Hydrombobomkulite =2.80 gm/cc.
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| Fermion Index: |
Fermion Index = 0.02
Boson Index = 0.98 |
| Photoelectric: |
PEHydrombobomkulite = 3.71 barns/electron
U=PEHydrombobomkulite x rElectron Density= 10.83 barns/cc.
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| Radioactivity: |
GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Hydrombobomkulite is Not Radioactive |
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Hydrombobomkulite Classification
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| Dana Class: |
19.01.04.02 (19)Nitrates - Hydroxyl or Halogen |
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(19.01)with miscellaneous formulae |
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(19.01.04)Mbobomkulite Group |
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19.01.04.01 Mbobomkulite (Ni,Cu)Al4(NO3,SO4)2(OH)12•3(H2O) P 21 2 |
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19.01.04.02 Hydrombobomkulite (Ni,Cu)Al4(NO3,SO4)2(OH)12•14(H2O) Unk Mono |
| Strunz Class: |
05.ND.15 05 - CARBONATES (NITRATES) |
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05.N - NITRATES |
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05.ND -With OH (etc.) and H2O |
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05.ND.15 Hydrombobomkulite (Ni,Cu)Al4(NO3,SO4)2(OH)12•14(H2O) Unk Mono |
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Other Hydrombobomkulite Information
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| References: |
NAME( Dana8) PHYS. PROP.(Dana8) |
| 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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Print or Cut-and-Paste your Hydrombobomkulite Specimen Label here :
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Hydrombobomkulite
(Ni,Cu)Al4(NO3,SO4)2(OH)12•14(H2O)
Dana No: 19.01.04.02 Strunz No: 05.ND.15
Locality:
Notes:
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