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Osakaite

A valid IMA mineral species
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01387190017061934107992.jpg
Osakaite, etc.

Trentini Mine, Contrada Trentini, Monte Naro - Riolo Valley side, Monte Naro, Torrebelvicino, Vicenza Province, Veneto, Italy
03959090017061934101150.jpg
Osakaite, etc.

Trentini Mine, Contrada Trentini, Monte Naro - Riolo Valley side, Monte Naro, Torrebelvicino, Vicenza Province, Veneto, Italy
06446440017061934106567.jpg
Osakaite

Trentini Mine, Contrada Trentini, Monte Naro - Riolo Valley side, Monte Naro, Torrebelvicino, Vicenza Province, Veneto, Italy
03083090016113434593007.jpg
Osakaite, etc.

Trentini Mine, Contrada Trentini, Monte Naro - Riolo Valley side, Monte Naro, Torrebelvicino, Vicenza Province, Veneto, Italy
05104800016113434602483.jpg
Osakaite, etc.

Trentini Mine, Contrada Trentini, Monte Naro - Riolo Valley side, Monte Naro, Torrebelvicino, Vicenza Province, Veneto, Italy
06550760016113434606040.jpg
Osakaite

Trentini Mine, Contrada Trentini, Monte Naro - Riolo Valley side, Monte Naro, Torrebelvicino, Vicenza Province, Veneto, Italy
02984410017055562289926.jpg
Osakaite, etc.

Trentini Mine, Contrada Trentini, Monte Naro - Riolo Valley side, Monte Naro, Torrebelvicino, Vicenza Province, Veneto, Italy
08004210017055562274375.jpg
Osakaite, etc.

Trentini Mine, Contrada Trentini, Monte Naro - Riolo Valley side, Monte Naro, Torrebelvicino, Vicenza Province, Veneto, Italy
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About OsakaiteHide

Formula:
Zn4(SO4)(OH)6 · 5H2O
Colour:
Pale blue to colorless or white
Lustre:
Pearly
Hardness:
1
Specific Gravity:
2.70
Crystal System:
Triclinic
Member of:
Namuwite Group
Name:
Named for Osaka prefecture, Japan, that includes the type locality.
Known as a synthetic compound (Bear, 1986).
Partial dehydration may result in lahnsteinite.

Related to namuwite.
Compare also Unnamed (Basic Zinc Sulphate Hydrate).


Unique IdentifiersHide

Mindat ID:
31498
Long-form identifier:
mindat:1:1:31498:1
GUID
(UUID V4):
bc3d74f4-26c5-4cd0-b7c5-c5d282229fac

IMA Classification of OsakaiteHide

Classification of OsakaiteHide

Strunz-mindat (2024):
7.DE.40

7 : SULFATES (selenates, tellurates, chromates, molybdates, wolframates)
D : Sulfates (selenates, etc.) with additional anions, with H2O
E : With only medium-sized cations; unclassified
Dana 8th ed.:
31.4.7.2

31 : HYDRATED SULFATES CONTAINING HYDROXYL OR HALOGEN
4 : (AB)4(XO4)Zq·xH2O

Mineral SymbolsHide

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

SymbolSourceReference
OkIMA–CNMNCWarr, L.N. (2021). IMA–CNMNC approved mineral symbols. Mineralogical Magazine, 85(3), 291-320. doi:10.1180/mgm.2021.43

Physical Properties of OsakaiteHide

Lustre:
Pearly
Transparency:
Transparent
Colour:
Pale blue to colorless or white
Streak:
White to pale blue
Hardness:
1 on Mohs scale
Hardness:
VHN10=16.5 - 22.8 kg/mm2 - Vickers
Tenacity:
Flexible
Cleavage:
Perfect
{001}
Density:
2.70(2) g/cm3 (Measured)    2.75 g/cm3 (Calculated)

Optical Data of OsakaiteHide

Type:
Biaxial (-)
RI values:
nα = 1.532(2) nβ = 1.565(2) nγ = 1.567(2)
2V:
Calculated: 27.2°
Max Birefringence:
δ = 0.035
Image shows birefringence interference colour range (at 30µm thickness)
and does not take into account mineral colouration.
Surface Relief:
Low

Chemistry of OsakaiteHide

Mindat Formula:
Zn4(SO4)(OH)6 · 5H2O
Elements listed:
H, O, S, Zn - search for minerals with similar chemistry

Crystallography of OsakaiteHide

Crystal System:
Triclinic
Class (H-M):
1 - Pinacoidal
Space Group:
P1
Cell Parameters:
a = 8.358 Å, b = 8.337 Å, c = 11.027 Å
α = 94.97°, β = 83.16°, γ = 119.6°
Ratio:
a:b:c = 1.003 : 1 : 1.323
Unit Cell V:
663 ų
Z:
2

X-Ray Powder DiffractionHide

Powder Diffraction Data:
d-spacingIntensity
10.96 Å(100)
5.47 Å(16)
3.642 Å(17)
3.229 Å(8)
2.717 Å(21)
2.663 Å(8)
2.562 Å(9)
1.574 Å(18)

Geological EnvironmentHide

Paragenetic Mode(s):
Paragenetic ModeEarliest Age (Ga)
Stage 7: Great Oxidation Event<2.4
47a : [Near-surface hydration of prior minerals]
47b : [Sulfates and sulfites]

Type Occurrence of OsakaiteHide

Type Locality:
ⓘ Hirao mine, Onsen-cho, Minoh City, Osaka Prefecture, Japan
General Appearance of Type Material:
Pale blue to colorless platy crystals
Place of Conservation of Type Material:
National Science Museum, Tokyo, number NSM-M28983.
Geological Setting of Type Material:
Oxide zone of hydrothermal vein cutting shale at abandoned zinc mine.
Associated Minerals at Type Locality:
HydrozinciteSmithsoniteChlorite GroupLimonite
Reference:
Ohnishi, M., Kusachi, I., Kobayashi, S. (2007) Osakaite, Zn4SO4(OH)6•5H2O, a new mineral species from the Hirao mine, Osaka, Japan. The Canadian Mineralogist: 45: 1511-1517.
Download:
https://rruff.info/rruff_1.0/uploads/CM45_1511.pdf

Synonyms of OsakaiteHide

Other Language Names for OsakaiteHide

Japanese:大阪石
Simplified Chinese:大阪石

Relationship of Osakaite to other SpeciesHide

Member of:
Namuwite Group
Other Members of this group:
BechereriteZn7Cu(OH)13[(SiO(OH)3(SO4)]Trig. 3 : P3
GordaiteNaZn4(SO4)(OH)6Cl · 6H2OTrig. 3 : P3
GuarinoiteZn6(SO4)(OH)10 · 5H2OHex.
Hanahanite [Zn8(OH)14(SO4)] · 3H2OHex. 6 : P63
Haywoodite[Pb(H2O)10][Zn12(OH)20(H2O)(SO4)3]Tric. 1 : P1
Hodgesmithite(Cu,Zn)6Zn(SO4)2(OH)10 · 3H2OTrig. 3 : P3
LahnsteiniteZn4(SO4)(OH)6 · 3H2O Tric. 1 : P1
NamuwiteZn4(SO4)(OH)6 · 4H2OTrig. 3 : P3
Ramsbeckite(Cu,Zn)15(SO4)4(OH)22 · 6H2OMon. 2/m
ThérèsemagnaniteNaCo4(SO4)(OH)6Cl · 6H2OTrig. 3 : P3
TzeferisiteCaZn8(SO4)2(OH)12Cl2(H2O)9Trig. 3m (3 2/m) : R3c

Common AssociatesHide

Associated Minerals Based on Photo Data:
1 photo of Osakaite associated with NamuwiteZn4(SO4)(OH)6 · 4H2O
1 photo of Osakaite associated with SerpieriteCa(Cu,Zn)4(SO4)2(OH)6 · 3H2O
1 photo of Osakaite associated with LahnsteiniteZn4(SO4)(OH)6 · 3H2O

Related Minerals - Strunz-mindat GroupingHide

7.DE.Cossaite(Mg0.5,◻)Al6(SO4)6(HSO4)F6 · 36H2OTrig. 3 : R3
7.DE.MagnesioalteriteMg2Fe3+4(SO4)4(C2O4)2(OH)4 · 17H2OMon. 2/m : B2/b
7.DE.LiangjuniteK2(Mo2O5)(SO4)2 · 3H2OTric. 1 : P1
7.DE.FabritziteZn9(SO4)2(OH)12Cl2 · 6H2OTrig. 3 : R3
7.DE.DownsiteK2(MoO3)3(SO4) · 4H2OMon. 2/m : B2/m
7.DE.05MangazeiteAl2(SO4)(OH)4 · 3H2OTric.
7.DE.10CarbonatecyanotrichiteCu4Al2(CO3,SO4)(OH)12 · 2H2OMon. 2/m : B2/m
7.DE.10CyanotrichiteCu4Al2(SO4)(OH)12 · 2H2OMon. 2/m : B2/m
7.DE.10UKI-1975-(SO:AlCu)(Cu, Al, SO4, H2O)
7.DE.15SchwertmanniteFe3+16(OH,SO4)12-13O16 · 10-12H2OTet.
7.DE.20TlalociteCu10Zn6(Te6+O4)2(Te4+O3)(OH)25Cl · 27H2OOrth.
7.DE.25UtahiteMgCu4Zn2Te6+3O14(OH)4 · 6H2OTric. 1 : P1
7.DE.35CoquanditeSb6+xO8+x(SO4)(OH)x(H2O)1- x (x = 0.3)Tric. 1 : P1
7.DE.42AlteriteZn2Fe3+4(SO4)4(C2O4)2(OH)4 · 17H2OMon. 2/m : B2/b
7.DE.45WilcoxiteMgAl(SO4)2F · 17H2OTric. 1 : P1
7.DE.45BarrotiteCu9Al(HSiO4)2[(SO4)(HAsO4)0.5](OH)12 · 8H2OTrig. 3
7.DE.47Tiberiobardiite{Cu9Al[SiO3(OH)]2(OH)12(H2O)6}(SO4)1.5 · 10H2OTrig. 3 : R3
7.DE.50Stanleyite(V4+O)(SO4) · 6H2OOrth.
7.DE.50Bouškaite(MoO2)2O(SO3OH)2(H2O)4Tric. 1 : P1
7.DE.57KhangalasiteFe(SO4)(OH) · 2H2OTric.
7.DE.60HydrobasaluminiteAl4(SO4)(OH)10 · 12-36H2OMon.
7.DE.62VolaschioiteFe4(SO4)O2(OH)6 · 2H2OMon. 2/m : B2/m
7.DE.65ZaheriteAl12(SO4)5(OH)26 · 20H2OTric.
7.DE.75CamérolaiteCu6Al3(OH)18(H2O)2[Sb(OH)6](SO4)Tric. 1 : P1

Fluorescence of OsakaiteHide

Other InformationHide

Notes:
Easily soluble in dilute HCl 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 OsakaiteHide

References for OsakaiteHide

Localities for OsakaiteHide

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

- 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.
Australia
 
  • New South Wales
    • Yancowinna Co.
      • Broken Hill district
        • Broken Hill
Elliott (2010)
Germany
 
  • Rhineland-Palatinate
    • Rhein-Lahn-Kreis
      • Lahnstein
        • Friedrichssegen
Gerhard Möhn collection +2 other references
Greece
 
  • Attica
    • East Attica
Lapis (2008)
        • Lavrion Mining District
          • Agios Konstantinos (Kamariza)
            • Kamariza Mines (Kamareza Mines)
Kolitsch et al. (2014)
Kolitsch et al. (2014)
          • Elaiochori
            • Dipseliza mines
Branko Rieck collection
Italy
 
  • Sardinia
    • South Sardinia Province
      • Nuxis
        • Monte Tamara mining area
Lecca G.C. et al. (2022)
  • Veneto
    • Vicenza Province
      • Torrebelvicino
        • Mercanti Valley
Orlandi (2013)
Orlandi (2013)
        • Monte Naro
          • Monte Naro - Riolo Valley side
            • Contrada Trentini
Orlandi (2013)
Japan (TL)
 
  • Osaka Prefecture
    • Minoh City
      • Onsen-cho
Ohnishi et al. (2007) +1 other reference
USA
 
  • California
    • Inyo County
      • Inyo Mts (Inyo Range)
        • Malpais Mesa
Kampf et al. (2016) +1 other reference
  • North Carolina
    • Haywood County
      • Waterville Lake
Anthony Kampf PXRD and EDS analysis. ...
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