Nickelhexahydrite (original) (raw)

A valid IMA mineral species

About NickelhexahydriteHide

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Crystal System:

Monoclinic

Name:

Named for its relation to hexahydrite and ferrohexahydrite, and for its nickel content.

Unique IdentifiersHide

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Long-form identifier:

mindat:1:1:2889:5

63797e70-d1e3-4b1b-9037-f46acdd72ac0

IMA Classification of NickelhexahydriteHide

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Type description reference:

Classification of NickelhexahydriteHide

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7.CB.25

7 : SULFATES (selenates, tellurates, chromates, molybdates, wolframates)
C : Sulfates (selenates, etc.) without additional anions, with H2O
B : With only medium-sized cations

29.6.8.4

29 : HYDRATED ACID AND NORMAL SULFATES
6 : AXO4·xH2O

25.12.13

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.

Pronunciation of NickelhexahydriteHide

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Pronunciation:

Physical Properties of NickelhexahydriteHide

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Cleavage:

Perfect
on {010} less perfect on {100}

Density:

2.036 g/cm3 (Measured) 2.05 g/cm3 (Calculated)

Optical Data of NickelhexahydriteHide

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RI values:

_n_α = 1.469 - 1.470 _n_γ = 1.493 - 1.494

δ = 0.024

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

Dispersion:

relatively weak

Chemistry of NickelhexahydriteHide

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Mindat Formula:

Ni(SO4) · 6H2O

Crystallography of NickelhexahydriteHide

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Crystal System:

Monoclinic

Class (H-M):

2/m - Prismatic

Cell Parameters:

a = 9.880(3) Å, b = 7.288(2) Å, c = 24.130(3) Å
β = 98.6°

Ratio:

a:b:c = 1.356 : 1 : 3.311

Unit Cell V:

1,717.96 ų (Calculated from Unit Cell)

X-Ray Powder DiffractionHide

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Powder Diffraction Data:

Geological EnvironmentHide

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Type Occurrence of NickelhexahydriteHide

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General Appearance of Type Material:

crystalline crusts and coatings

Place of Conservation of Type Material:

Mineralogical Institute, Tomsk Polytechnical Institute, Tomsk, Russia.

Associated Minerals at Type Locality:

Reference:

Oleinikov, B.V., Shvartsev, S.L., Mandrikova, N.T., Oleinikova, N.N. (1965) Nickelhexahydrite, a new mineral. Zapiski Vsesoyuznogo Mineralogicheskogo Obshchestva: 94(5): 534-547.

Other Language Names for NickelhexahydriteHide

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Relationship of Nickelhexahydrite 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 NickelhexahydriteHide

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References for NickelhexahydriteHide

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Localities for NickelhexahydriteHide

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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.