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. |
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Search for Hydrombobomkulite Images |
Images:
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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: |
MonoclinicSpace 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 = 0.2674) where Ncalc=Dcalc*KC+1 |
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Calculated Properties of Hydrombobomkulite
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Electron Density: |
relectron=2.92 gm/cc note: rHydrombobomkulite =2.80 gm/cc. |
Fermion Index |
Fermion Index = 0.02849 Boson Index = 0.97151 |
Photoelectric: |
PEHydrombobomkulite = 3.71 barns/electron U=PEHydrombobomkulite x relectron= 10.83 barns/cc. |
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: |
19.1.4.2 (19)Nitrates - Hydroxyl or Halogen |
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(19.1)with miscellaneous formulae |
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(19.1.4)Dana Group |
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19.1.4.1 Mbobomkulite (Ni,Cu)Al4(NO3,SO4)2(OH)12·3(H2O) P 21 2 |
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19.1.4.2 Hydrombobomkulite (Ni,Cu)Al4(NO3,SO4)2(OH)12·14(H2O) Unk Mono |
Strunz Class: |
VI/D.08-80 VI - Sulfates,Chromates,Molybdates and Tungstates |
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VI/D - Water-bearing sulfates with unfamiliar anions. cations of medium size |
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VI/D.08 - Spangolite - Glaucocerinite series |
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VI/D.08-05 Bechererite! (Zn,Cu)6Zn2(OH)13[(S,Si)(O,OH)4]2 P 3 3 |
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VI/D.08-10 Spangolite Cu6Al(SO4)(OH)12Cl·3(H2O) P 31c 3m |
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VI/D.08-20 Cyanotrichite Cu4Al2(SO4)(OH)12·2(H2O) Unk Ortho |
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VI/D.08-30 Carbonate-cyanotrichite Cu4Al2(CO3,SO4)(OH)12·2(H2O) Unk Ortho |
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VI/D.08-35 Camerolaite Cu4Al2[HSbO4,SO4](OH)10(CO3)·2(H2O) P 21 ? 2 |
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VI/D.08-40 Woodwardite Cu4Al2(SO4)(OH)12·2-4(H2O) Unk Hex |
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VI/D.08-42 Hydrowoodwardite! Cu1-xAlx(OH)2(SO4)x/2·n(H2O)with0<x<0.67andn>3x/2 R 3m 3 2/m |
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VI/D.08-45 Zincowoodwardite! [Zn1-xAlx(OH)2][(SO4)x/2(H2O)n] P 3- or R 3m 3 |
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VI/D.08-45* Zincowoodwardite-1T! [Zn1BxAlx(OH)2][(SO4)x/2·n(H2O)],x=0.33,n.0.96 P 3 3 |
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VI/D.08-45** Zincowoodwardite-3R! [Zn1BxAlx(OH)2][(SO4)x/2·n(H2O)],0.32<x<0.50,n=0.59 R 3m 3 2/m |
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VI/D.08-50 Chalcoalumite CuAl4(SO4)(OH)12·3(H2O) P 21 2 |
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VI/D.08-60 Nickelalumite (Ni,Cu)Al4[(SO4),(NO3)2](OH)12·3(H2O) P 21 2 |
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VI/D.08-70 Mbobomkulite (Ni,Cu)Al4(NO3,SO4)2(OH)12·3(H2O) P 21 2 |
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VI/D.08-80 Hydrombobomkulite (Ni,Cu)Al4(NO3,SO4)2(OH)12·14(H2O) Unk Mono |
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VI/D.08-90 Carrboydite (Ni,Cu)14Al9(SO4,CO3)6(OH)43·7(H2O) Unk Hex |
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VI/D.08-100 Zincaluminite Zn6Al6(SO4)2(OH)26·5(H2O) Unk Hex |
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VI/D.08-110 Glaucocerinite (Zn,Cu)5Al3(SO4)1.5(OH)16·9(H2O) Unk (HEX-R) Trig |
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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 -Google Images
5 -Google Scholar
6 -Handbook of Mineralogy (UofA)
7 -MinDAT
8 -MinMax(Deutsch)
9 -MinMax(English)
10 -Mineralienatlas (Deutsch)
11 -QUT Mineral Atlas
12 -École des Mines de Paris
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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: 19.1.4.2 Strunz No: VI/D.08-80
Locality:
Notes:
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