Hydrohonessite (original) (raw)

A valid IMA mineral species

About HydrohonessiteHide

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Formula:

(Ni1-xFe3+x)(OH)2(SO4)x/2 · nH2O

Specific Gravity:

2.96 (Calculated)

Name:

For its relationship (hydrated form) to Honessite.

May convert readily into honessite, depending on humidity and temperature.

Appears to be stable between pH 6 and 7.

Unique IdentifiersHide

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Long-form identifier:

mindat:1:1:1978:7

c8ac3497-db12-4ddb-a141-d0355c9a8449

IMA Classification of HydrohonessiteHide

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IMA Formula:

(Ni1-xFe3+x)(SO4)x/2(OH)2 · nH2O (x 3x/2)

Type description reference:

Classification of HydrohonessiteHide

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7.DD.35

7 : SULFATES (selenates, tellurates, chromates, molybdates, wolframates)
D : Sulfates (selenates, etc.) with additional anions, with H2O
D : With only medium-sized cations; sheets of edge-sharing octahedra

31.10.7.1

31 : HYDRATED SULFATES CONTAINING HYDROXYL OR HALOGEN
10 : Miscellaneous

25.12.12

25 : Sulphates
12 : Sulphates of Co and Ni

Mineral SymbolsHide

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As of 2021 there are now IMA–CNMNC approved mineral symbols (abbreviations) for each mineral species, useful for tables and diagrams.

Please only use the official IMA–CNMNC symbol. Older variants are listed for historical use only.

Physical Properties of HydrohonessiteHide

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Transparency:

Transparent, Translucent

Hardness Data:

Could not be measured

Density:

2.96 g/cm3 (Calculated)

Comment:

Could not be measured due to fine grain of the material

Optical Data of HydrohonessiteHide

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RI values:

_n_ω = 1.630 _n_ε = 1.590

δ = 0.040

Image shows birefringence interference colour range (at 30µm thickness)
and does not take into account mineral colouration.

Chemistry of HydrohonessiteHide

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Mindat Formula:

(Ni1-xFe3+x)(OH)2(SO4)x/2 · nH2O

( x > 0.5, n > 3x/2)

Crystallography of HydrohonessiteHide

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Cell Parameters:

a = 3.09 Å, c = 10.8 Å

Unit Cell V:

89.30 ų (Calculated from Unit Cell)

Morphology:

hexagonal flakes, to 10 µm.

Comment:

Point Group: n.d.; Space Group: n.d.;Z = n.d.

X-Ray Powder DiffractionHide

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Powder Diffraction Data:

Geological EnvironmentHide

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Type Occurrence of HydrohonessiteHide

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General Appearance of Type Material:

Thin surface encrustation of tiny hexagonal crystals on botryoidal quartz and magnesite in a fracture in supergene Ni-Fe sulphides.

Place of Conservation of Type Material:

Western Australian Museum, Perth, Australia, M.77a.1991, M.77b.1991; National Museum of Natural History, Washington, D.C., USA, 150420.

Associated Minerals at Type Locality:

Reference:

Nickel, E.H., Wildman, J.E. (1981) Hydrohonessite- a new hydrated Ni-Fe hydroxy-sulphate mineral; its relationship to honessite, carrboydite, and minerals of the pyroaurite group. Mineralogical Magazine: 44: 333-337.

Synonyms of HydrohonessiteHide

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Other Language Names for HydrohonessiteHide

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Relationship of Hydrohonessite to other SpeciesHide

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Other Members of this group:

Common AssociatesHide

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Associated Minerals Based on Photo Data:

Related Minerals - Strunz-mindat GroupingHide

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Other InformationHide

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Health Risks:

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

Internet Links for HydrohonessiteHide

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References for HydrohonessiteHide

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Reference List:

Mills, S. J., Christy, A. G., Génin, J.-M. R., Kameda, T., Colombo, F. (2012) Nomenclature of the hydrotalcite supergroup: natural layered double hydroxides. Mineralogical Magazine, 76 (5) 1289-1336 doi:10.1180/minmag.2012.076.5.10

Localities for HydrohonessiteHide

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This map shows a selection of localities that have latitude and longitude coordinates recorded. Click on the symbol to view information about a locality. The symbol next to localities in the list can be used to jump to that position on the map.

Locality ListHide

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- This locality has map coordinates listed. - This locality has estimated coordinates. ⓘ - Click for references and further information on this occurrence. ? - Indicates mineral may be doubtful at this locality. - Good crystals or important locality for species. - World class for species or very significant. (TL) - Type Locality for a valid mineral species. (FRL) - First Recorded Locality for everything else (eg varieties). Struck out - Mineral was erroneously reported from this locality. Faded * - Never found at this locality but inferred to have existed at some point in the past (e.g. from pseudomorphs).

All localities listed without proper references should be considered as questionable.