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Munakataite

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Big Photo

Otto Mountain, Baker, San Bernardino Co., California, USA
© Caltech

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Formula:
Pb
 
2
Cu
 
2
(Se
4+
 
O
 
3
)(SO
 
4
)(OH)
 
4
System:MonoclinicColour:light blue
Hardness:2½
Member of:Linarite-Chenite Group
Name:Named for the city of Munakata, where the Kato mine is located.
Isostructural with:Schmiederite


Linarite-Chenite Group.

The sulphate analogue of schmiederite.

Classification of Munakataite

IMA status:Approved 2007
Nickel-Strunz 10th (pending) edition ID:7.BC.65

7 : SULFATES (selenates, tellurates, chromates, molybdates, wolframates)
B : Sulfates (selenates, etc.) with additional anions, without H2O
C : With medium-sized and large cations
Dana 8th edition ID:34.8.9.

34 : SELENITES, TELLURITES AND SULFITES
8 : Compound Selenites, Tellurites and Sulfites
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Type Occurrence of Munakataite

Type Locality:Kato mine, Munakata, Fukuoka prefecture, Kyushu Region, Japan
General Appearance of Type Material:thin coating on a fracture in a quartz vein. occurs as aggregates of minute fibrous crystals (to 30 microns)
Place of Conservation of Type Material:National Museum of Nature and Science, Tokyo, Japan (NSM-M28982)
Geological Setting of type material:Oxide zone of aguilarite-bearing Pb-Zn-Au-Ag ores.
Associated Minerals at type locality:
Malachite

Physical Properties of Munakataite

Lustre:Vitreous
Diaphaneity (Transparency):Transparent
Colour:light blue
Streak:bluish white
Hardness (Mohs):2½
Hardness Data:Measured
Tenacity:Brittle
Cleavage:Perfect
or distinct in one direction
Fracture:None observed
Density (calculated):5.526 g/cm3

Crystallography of Munakataite

Crystal System:Monoclinic
Class (H-M):2/m - Prismatic
Space Group:P21/m {P1 1 21/m} {P21/m} {P1 21/m 1}
Cell Parameters:a = 9.766(8) Å, b = 5.666(5) Å, c = 9.291(10) Å
β = 102.40(8)°
Ratio:a:b:c = 1.724 : 1 : 1.64
Unit Cell Volume:V 502.1 ų
Z:2
X-Ray Powder Diffraction:
d-spacingIntensity
4.86 (44)
4.47 (57)
3.53 (39)
3.18 (100)
3.14 (68)
2.72 (22)
2.33 (18)
1.813 (19)

Chemical Properties of Munakataite

Formula:
Pb
 
2
Cu
 
2
(Se
4+
 
O
 
3
)(SO
 
4
)(OH)
 
4
Essential elements:Cu, H, O, Pb, S, Se
All elements listed in formula:Cu, H, O, Pb, S, Se

Relationship of Munakataite to other Species

Member of:Linarite-Chenite Group
Other Members of Group:

- +
Chenite
Pb
 
4
Cu(SO
 
4
)
 
2
(OH)
 
6
Linarite
PbCu(SO
 
4
)(OH)
 
2
Schmiederite
Pb
 
2
Cu
 
2
(Se
6+
 
O
 
4
)(Se
4+
 
O
 
3
)(OH)
 
4
Related Minerals - Nickel-Strunz Grouping):

- +
7.BC.05D'Ansite
Na
 
21
Mg(SO
 
4
)
 
10
Cl
 
3
7.BC.10Alunite
KAl
 
3
(SO
 
4
)
 
2
(OH)
 
6
7.BC.10Ammonioalunite
(NH
 
4
)Al
 
3
(SO
 
4
)
 
2
(OH)
 
6
7.BC.10Ammoniojarosite
(NH
 
4
)Fe
3+
3
(SO
 
4
)
 
2
(OH)
 
6
7.BC.10Argentojarosite
AgFe
3+
3
(SO
 
4
)
 
2
(OH)
 
6
7.BC.10Beaverite-(Cu)
Pb(Fe
3+
 
,Cu)
 
3
(SO
 
4
)
 
2
(OH)
 
6
7.BC.10Dorallcharite
(Tl,K)Fe
3+
3
(SO
 
4
)
 
2
(OH)
 
6
7.BC.10Huangite
Ca
 
0.5
Al
 
3
(SO
 
4
)
 
2
(OH)
 
6
7.BC.10Hydroniumjarosite
(H
 
3
O)Fe
3+
3
(SO
 
4
)
 
2
(OH)
 
6
7.BC.10Jarosite
KFe
3+
 
 
3
(SO
 
4
)
 
2
(OH)
 
6
7.BC.10Minamiite
(Na,Ca
 
0.5
,K)Al
 
3
(SO
 
4
)
 
2
(OH)
 
6
7.BC.10Natroalunite
(Na,K)Al
 
3
(SO
 
4
)
 
2
(OH)
 
6
7.BC.10Natrojarosite
NaFe
 
3
(SO
 
4
)
 
2
(OH)
 
6
7.BC.10Osarizawaite
Pb(Al,Cu)
 
3
(SO
 
4
)
 
2
(OH)
 
6
7.BC.10Plumbojarosite
Pb
 
0.5
Fe
3+
3
(SO
 
4
)
 
2
(OH)
 
6
7.BC.10Schlossmacherite
(H
 
3
O,Ca)Al
 
3
(SO
 
4
,AsO
 
4
)
 
2
(OH)
 
6
7.BC.10Walthierite
Ba
 
0.5
Al
 
3
(SO
 
4
)
 
2
(OH)
 
6
7.BC.10Beaverite-(Zn)
Pb(Fe
3+
2
Zn)(SO
 
4
)
 
2
(OH)
 
6
7.BC.15Ye'elimite
Ca
 
4
Al
 
6
(SO
 
4
)O
 
12
7.BC.20Atlasovite
K(BiO)Cu
 
6
Fe
3+
 
(SO
 
4
)
 
5
O
 
3
Cl
7.BC.20Nabokoite
KCu
 
7
(SO
 
4
)
 
5
(Te
4+
 
O
 
3
)OCl
7.BC.25Chlorothionite
K
 
2
Cu(SO
 
4
)Cl
 
2
7.BC.30Euchlorine
KNaCu
 
3
(SO
 
4
)
 
3
O
7.BC.30Fedotovite
K
 
2
Cu
 
3
(SO
 
4
)
 
3
O
7.BC.35Kamchatkite
KCu
 
3
(SO
 
4
)
 
2
OCl
7.BC.40Piypite
K
 
2
Cu
 
2
(SO
 
4
)
 
2
O
7.BC.45Klyuchevskite
K
 
3
Cu
 
3
(Fe
3+
 
,Al)(SO
 
4
)
 
4
O
 
2
7.BC.45Alumoklyuchevskite
K
 
3
Cu
 
3
(Al,Fe
3+
 
)(SO
 
4
)
 
4
O
 
2
7.BC.50Caledonite
Pb
 
5
Cu
 
2
(SO
 
4
)
 
3
(CO
 
3
)(OH)
 
6
7.BC.55Wherryite
Pb
 
7
Cu
 
2
(SO
 
4
)
 
4
(SiO
 
4
)
 
2
(OH)
 
2
7.BC.60Mammothite
Pb
 
6
Cu
 
4
AlSb(SO
 
4
)
 
2
(OH)
 
18
Cl
 
4
7.BC.65Linarite
PbCu(SO
 
4
)(OH)
 
2
7.BC.65Schmiederite
Pb
 
2
Cu
 
2
(Se
6+
 
O
 
4
)(Se
4+
 
O
 
3
)(OH)
 
4
7.BC.70Chenite
Pb
 
4
Cu(SO
 
4
)
 
2
(OH)
 
6
7.BC.75Krivovichevite
Pb
 
3
Al(SO
 
4
)(OH)
 
7
7.BC.80Anhydrokainite
KMg(SO
 
4
)Cl

Other Names for Munakataite

Synonyms:
IMA2007-012
Other Languages:
Japanese:宗像石

Other Information

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

References for Munakataite

Reference List:

- +
Matsubara, S. et al. (2008): Journal of Mineralogical & Petrological Sciences 103, 327-332.

Kampf, A. R., Mills, S. J. & Housley, R. M. (2010) The crystal structure of munakataite, Pb2Cu2(Se4+O3)(SO4)(OH)4, from Otto Mountain, San Bernardino County, California, USA. Mineralogical Magazine, 74(6), 991–998.

Mindat.org articles about Munakataite

Article entries:
A New Occurrence of Munakataite, a Rare Selenium Containing Mineral SpeciesRobert Meyer

Internet Links for Munakataite

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    • Localities for Munakataite

    The 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.
    Hide Locality List
    (TL) indicates type locality. ? indicates mineral may be doubtful at this locality. All other localities listed without reference should be considered as uncertain and unproven until references can be found.
    Japan
     
    • Honshu Island
      • Tohoku Region
        • Akita Prefecture
    		Matsubara, S. et al. (2008): Journal of Mineralogical & Petrological Sciences 103, 327-332
    • Kyushu Region
      • Fukuoka prefecture
        • Munakata
    		Matsubara, S. et al. (2008): Journal of Mineralogical & Petrological Sciences 103, 327-332
    Spain
     
    • Andalusia
      • Almería
        • Níjar
          • Rodalquilar
            • Cerro de los Guardias
    		Georges FAVREAU collection
    USA
     
    • Arizona
      • Maricopa Co.
        • Big Horn Mts
          • Osborn District
            • Tonopah
              • Belmont Mountain
    		Joe Marty, Anthony Kampf, Robert Housley, Stuart Mills, Stefan Weiss (2010) Seltene neue Tellurmineralien aus Kalifornien, Utah, Arizona und New Mexico (USA). Lapis, 35, #12, 42-51.
      • Pinal Co.
        • Mammoth District
          • Tiger
            • St. Anthony deposit
    		Robert O. Meyer collection; WDS and EDS confirmed
    • California
      • San Bernardino Co.
        • Baker
    		Robert housley collection (ID by PXRD and SEM-EDS by Anthony Kampf at Los Angeles County Natural History Museum)
    Kampf, A. R., Mills, S. J. & Housley, R. M. (2010) The crystal structure of munakataite, Pb2Cu2(Se4+O3)(SO4)(OH)4, from Otto Mountain, San Bernardino County, California, USA. Mineralogical Magazine, 74(6), 991–998. Collected by and in the collection of Brent Thorne. Visually identified.
    Kampf, A. R., Mills, S. J. & Housley, R. M. (2010) The crystal structure of munakataite, Pb2Cu2(Se4+O3)(SO4)(OH)4, from Otto Mountain, San Bernardino County, California, USA. Mineralogical Magazine, 74(6), 991–998.
    Rocks & Minerals 86:132-142
    • Nevada
      • Humboldt Co.
        • Iron Point District
          • Valmy
    		Joe Marty, Anthony Kampf, Robert Housley, Stuart Mills, Stefan Weiss (2010) Seltene neue Tellurmineralien aus Kalifornien, Utah, Arizona und New Mexico (USA). Lapis, 35, #12, 42-51.
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