Nakauriite
A valid IMA mineral species
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About Nakauriite
Formula:
Cu8(SO4)4(CO3)(OH)6 · 48H2O
May contain minor Mg, Ni.
Colour:
Translucent blue
Specific Gravity:
2.39
Crystal System:
Orthorhombic
Name:
Named for the type locality.
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 Identifiers
Mindat ID:
2948
Long-form identifier:
mindat:1:1:2948:9
GUID
(UUID V4):
(UUID V4):
c471d4d0-6ddf-43c6-8b34-640af657bcf6
IMA Classification of Nakauriite
Approved
First published:
1976
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 Nakauriite
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
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
32 : COMPOUND SULFATES
4 : Hydrated Compound Sulfates containing Hydroxyl or Halogen
12.2.6
12 : Carbonates with other anions
2 : Carbonates with sulphate
12 : Carbonates with other anions
2 : Carbonates with sulphate
Mineral Symbols
As of 2021 there are now IMA–CNMNC approved mineral symbols (abbreviations) for each mineral species, useful for tables and diagrams.
| Symbol | Source | Reference |
|---|---|---|
| Nak | IMA–CNMNC | Warr, L.N. (2021). IMA–CNMNC approved mineral symbols. Mineralogical Magazine, 85(3), 291-320. doi:10.1180/mgm.2021.43 |
Physical Properties of Nakauriite
Transparency:
Translucent
Colour:
Translucent blue
Density:
2.39(2) g/cm3 (Measured) 2.35 g/cm3 (Calculated)
Optical Data of Nakauriite
Type:
Biaxial (-)
RI values:
nα = 1.585 - 1.597 nβ = 1.604 - 1.612 nγ = 1.612 - 1.618
2V:
Measured: 60° to 70°, Calculated: 65°
Max Birefringence:
δ = 0.027
Image shows birefringence interference colour range (at 30µm thickness)
and does not take into account mineral colouration.
and does not take into account mineral colouration.
Surface Relief:
Moderate
Dispersion:
small
Pleochroism:
Visible
Comments:
X = colorless, Y = very light greenish blue,Z = pale sky-blue to very light blue.
Chemistry of Nakauriite
Mindat Formula:
Cu8(SO4)4(CO3)(OH)6 · 48H2O
May contain minor Mg, Ni.
May contain minor Mg, Ni.
Crystallography of Nakauriite
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)
Z:
2
Morphology:
Crystals are fibers, to 3 mm, in sprays and aggregates.
Comment:
Point Group: n.d; Space Group: n.d.
X-Ray Powder Diffraction
Powder Diffraction Data:
| d-spacing | Intensity |
|---|---|
| 7.31 Å | (100) |
| 3.652 Å | (20) |
| 2.367 Å | (16) |
| 1.9148 Å | (16) |
| 4.840 Å | (14) |
| 3.936 Å | (14) |
| 2.397 Å | (14) |
Geological Environment
Paragenetic Mode(s):
| Paragenetic Mode | Earliest Age (Ga) |
|---|---|
| Stage 3b: Earth’s earliest hydrosphere | >4.45 |
| 13 : Hadean serpentinization | |
| Stage 7: Great Oxidation Event | <2.4 |
| 47a : [Near-surface hydration of prior minerals] | |
| 47b : [Sulfates and sulfites] | |
| 47c : [Carbonates, phosphates, borates, nitrates] |
Type Occurrence of Nakauriite
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 Nakauriite
Other Language Names for Nakauriite
German:Nakauriit
Spanish:Nakauriita
Common Associates
Associated Minerals Based on Photo Data:
| 9 photos of Nakauriite associated with Serpentine Subgroup | D3[Si2O5](OH)4 |
| 3 photos of Nakauriite associated with Hydromagnesite | Mg5(CO3)4(OH)2 · 4H2O |
| 3 photos of Nakauriite associated with Tremolite | ◻Ca2Mg5(Si8O22)(OH)2 |
| 3 photos of Nakauriite associated with Talc | Mg3Si4O10(OH)2 |
| 1 photo of Nakauriite associated with Huntite | CaMg3(CO3)4 |
| 1 photo of Nakauriite associated with Aragonite | CaCO3 |
| 1 photo of Nakauriite associated with Copper | Cu |
Related Minerals - Strunz-mindat Grouping
| 7.DG. | Mathesiusite | K5(UO2)4(SO4)4(VO5) · 4H2O |
| 7.DG.05 | Darapskite | Na3(SO4)(NO3) · H2O |
| 7.DG.10 | Clinoungemachite | (Na, K, Fe, SO4) |
| 7.DG.10 | Humberstonite | Na7K3Mg2(SO4)6(NO3)2 · 6H2O |
| 7.DG.10 | Ungemachite | K3Na8Fe(SO4)6(NO3)2 · 6H2O |
| 7.DG.15 | Bentorite | Ca6Cr2(SO4)3(OH)12 · 26H2O |
| 7.DG.15 | Charlesite | Ca6(Al,Si)2(SO4)2[B(OH)4](OH,O)12 · 26H2O |
| 7.DG.15 | Ettringite | Ca6Al2(SO4)3(OH)12 · 26H2O |
| 7.DG.15 | Jouravskite | Ca3Mn4+(SO4)(CO3)(OH)6 · 12H2O |
| 7.DG.15 | Sturmanite | Ca6Fe3+2(SO4)2.5[B(OH)4](OH)12 · 25H2O |
| 7.DG.15 | Thaumasite | Ca3(SO4)[Si(OH)6](CO3) · 12H2O |
| 7.DG.15 | Carraraite | Ca3(SO4)[Ge(OH)6](CO3) · 12H2O |
| 7.DG.15 | Buryatite | Ca3(Si,Fe3+,Al)(SO4)B(OH)4(OH,O)6 · 12H2O |
| 7.DG.15 | Birunite | Ca18(SiO3)8.5(CO3)8.5SO4 · 15H2O(?) |
| 7.DG.15 | Hielscherite | Ca3Si(SO4)(SO3)(OH)6 · 11H2O |
| 7.DG.15 | Kottenheimite | Ca 3Si(SO4)2(OH)6 · 12H2O |
| 7.DG.15 | Imayoshiite | Ca3Al(CO3)[B(OH)4](OH)6 · 12H2O |
| 7.DG.15 | Tatarinovite | Ca3Al(SO4)[B(OH)4](OH)6 · 12H2O |
| 7.DG.15 | Siwaqaite | Ca6Al2(CrO4)3(OH)12 · 26H2O |
| 7.DG.15 | Chiyokoite | Ca3Si(CO3)[B(OH)4]O (OH)5 · 12H2O |
| 7.DG.20 | Rapidcreekite | Ca2(SO4)(CO3) · 4H2O |
| 7.DG.25 | Tatarskite | Ca6Mg2(SO4)2(CO3)2(OH)4Cl4 · 7H2O |
| 7.DG.35 | Chessexite | (Na,K)4Ca2(Mg,Zn)3Al8(SO4)10(SiO4)2 · 40H2O |
| 7.DG.40 | Carlosruizite | K6(Na,K)4Na6Mg10(SeO4)12(IO3)12 · 12H2O |
| 7.DG.40 | Fuenzalidaite | K6(Na,K)4Na6Mg10(SO4)12(IO3)12 · 12H2O |
| 7.DG.45 | Chelyabinskite | (Ca,Mg)3(SO4,CO3)2[Si(OH)6] · 9H2O (?) |
| 7.DG.55 | Ramazzoite | [Mg8Cu12(PO4)(CO3)4(OH)24(H2O)20][(H0.33SO4)3(H2O)36] |
| 7.DG.60 | Witzkeite | Na4K4Ca(NO3)2(SO4)4 · 2H2O |
Other Information
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 Nakauriite
mindat.org URL:
https://www.mindat.org/min-2948.html
Please feel free to link to this page.
Please feel free to link to this page.
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References for Nakauriite
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
Fleischer, Michael, Cabri, Louis J., Nickel, Ernest H., Pabst, Adolf (1977) New Mineral Names. American Mineralogist, 62 (5-6) 593-600
Localities for Nakauriite
symbol to view information about a locality.
The Locality List
- 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).
All localities listed without proper references should be considered as questionable.
Austria | |
| Postl et al. (1988) +1 other reference |
| Postl et al. (1988) +1 other reference |
Germany | |
| Habel (2006) +1 other reference |
| Christophe Boutry collection |
Greece | |
| Kolitsch et al. (2014) |
Italy | |
| Palenzona et al. (2007) |
| AA. VV. +1 other reference |
Japan (TL) | |
| Suzuki et al. (1976) +1 other reference |
| Kosuge (1997) |
Russia | |
| V.A. Popov analytical data (2012) |
UK | |
| Braithwaite et al. (1983) |
USA | |
| American Mineralogist |
| Castor et al. (2004) | |
| |
| Personally Collected 4/12/2008 |
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Lobminggraben quarry, Lobminggraben, Sankt Stefan ob Leoben, Leoben District, Styria, Austria