Nakauriite (original) (raw)

A valid IMA mineral species

About NakauriiteHide

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Formula:

Cu8(SO4)4(CO3)(OH)6 · 48H2O

May contain minor Mg, Ni.

Crystal System:

Orthorhombic

Name:

Named for the type locality.

The originally reported sulphate content appears to be questionable according to several literature sources; the crystal structure is unknown. Palenzona & Martinelli (2007) suggest a formula (Mg,Cu)x(CO3)y(OH)z•nH2O (x, y, z unknown).

Unique IdentifiersHide

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Long-form identifier:

mindat:1:1:2948:9

c471d4d0-6ddf-43c6-8b34-640af657bcf6

IMA Classification of NakauriiteHide

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Type description reference:

Suzuki, Jujin, Ito, Masahiro, Sugiura, Tsutomu (1976) A new copper sulfate-carbonate hydroxide hydrate mineral, (Mn,Ni,Cu)8(SO4)4(CO3)(OH)6·48H2O, from Nakauri, Aichi Prefecture, Japan. The Journal of the Japanese Association of Mineralogists, Petrologists and Economic Geologists, 71 (7) 183-192 doi:10.2465/ganko1941.71.183

Classification of NakauriiteHide

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7.DG.30

7 : SULFATES (selenates, tellurates, chromates, molybdates, wolframates)
D : Sulfates (selenates, etc.) with additional anions, with H2O
G : With large and medium-sized cations; with NO3, CO3, B(OH)4, SiO4 or IO3

32.4.1.1

32 : COMPOUND SULFATES
4 : Hydrated Compound Sulfates containing Hydroxyl or Halogen

12.2.6

12 : Carbonates with other anions
2 : Carbonates with sulphate

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.

Physical Properties of NakauriiteHide

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Density:

2.39(2) g/cm3 (Measured) 2.35 g/cm3 (Calculated)

Optical Data of NakauriiteHide

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RI values:

_n_α = 1.585 - 1.597 _n_β = 1.604 - 1.612 _n_γ = 1.612 - 1.618

2V:

Measured: 60° to 70°, Calculated: 65°

δ = 0.027

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

Comments:

X = colorless, Y = very light greenish blue,Z = pale sky-blue to very light blue.

Chemistry of NakauriiteHide

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Mindat Formula:

Cu8(SO4)4(CO3)(OH)6 · 48H2O

May contain minor Mg, Ni.

Crystallography of NakauriiteHide

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Crystal System:

Orthorhombic

Cell Parameters:

a = 14.585 Å, b = 11.47 Å, c = 16.22 Å

Ratio:

a:b:c = 1.272 : 1 : 1.414

Unit Cell V:

2,713.44 ų (Calculated from Unit Cell)

Morphology:

Crystals are fibers, to 3 mm, in sprays and aggregates.

Comment:

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

X-Ray Powder DiffractionHide

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Powder Diffraction Data:

Geological EnvironmentHide

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Type Occurrence of NakauriiteHide

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General Appearance of Type Material:

Bundled aggregates of very small slender to fibrous crystals, whose sizes are less than about 0.2 mm in length, 0.006 mm in width.

Place of Conservation of Type Material:

National Science Museum, Tokyo, Japan, M-24586; National Museum of Natural History, Washington, D.C., USA, 136584.

Geological Setting of Type Material:

Fissure-fillings in serpentinite

Associated Minerals at Type Locality:

Reference:

Suzuki, J., Ito, M., Sugiura, T. (1976) A new copper sulfate-carbonate hydroxide hydrate mineral, (Mn,Ni,Cu)8(SO4)4(CO3)(OH)6·48H2O, from Nakauri, Aichi Prefecture, Japan. Journal of Mineralogy, Petrology and Economic Geology: 71: 183-192.

Synonyms of NakauriiteHide

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Other Language Names for NakauriiteHide

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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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Notes:

Effervescent in HCl, H2SO4, and HNO3

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 NakauriiteHide

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References for NakauriiteHide

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Reference List:

Suzuki, Jujin, Ito, Masahiro, Sugiura, Tsutomu (1976) A new copper sulfate-carbonate hydroxide hydrate mineral, (Mn,Ni,Cu)8(SO4)4(CO3)(OH)6·48H2O, from Nakauri, Aichi Prefecture, Japan. The Journal of the Japanese Association of Mineralogists, Petrologists and Economic Geologists, 71 (7) 183-192 doi:10.2465/ganko1941.71.183

Kolitsch, U., Rieck, B., Brandstätter, F., Schreiber, F., Fabritz, K. H., Blaß, G., Gröbner, J. (2014) Neufunde aus dem altem Bergbau und den Schlacken von Lavrion (I). Mineralien-Welt, 25 (1). 60-75

Localities for NakauriiteHide

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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.