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Monimolite

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Harstigen Mine, Pajsberg, Persberg district, Filipstad, Värmland, Sweden
© Ö. Österberg

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System:IsometricColour:Yellow, gray-green, dark ...
Hardness:4½ - 6
Name:From the Greek μόυĭμος = "monimos" for "stable," in allusion to the difficulty with which it is decomposed chemically.
A variety of Roméite Group

A secondary mineral occurring in Calcite veins in iron and manganese deposits and in the oxidized zone of a polymetallic deposit.

The problematical species monimolite (Igelström 1865, Mason & Vitaliano 1953) is almost certainly identical with oxyplumboroméite, but needs re-examination.

Classification of Monimolite

Strunz 8th edition ID:4/C.13-10
Nickel-Strunz 10th (pending) edition ID:4.DH.20

4 : OXIDES (Hydroxides, V[5,6] vanadates, arsenites, antimonites, bismuthites, sulfites, selenites, tellurites, iodates)
D : Metal: Oxygen = 1:2 and similar
H : With large (+- medium-sized) cations; sheets of edge-sharing octahedra
Dana 8th edition ID:44.1.1.4

44 : ANTIMONATES
1 : A2X2O6(O,OH,F)
Hey's CIM Ref.:24.3.6

24 : Antimonates and Antimonites
3 : Antimonates of Ti and Pb
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Type Occurrence of Monimolite

Type Locality:Harstigen Mine, Pajsberg, Persberg district, Filipstad, Värmland, Sweden
Year of Discovery:1865
Geological Setting of type material:Calcite veins in an iron and manganese deposit.
Associated Minerals at type locality:
TephroiteCalcite

Physical Properties of Monimolite

Lustre:Adamantine, Greasy
Diaphaneity (Transparency):Opaque
Colour:Yellow, gray-green, dark brown
Streak:Straw-yellow to cinnamon-brown
Hardness (Mohs):4½ - 6
Cleavage:Poor/Indistinct
Indistinct on {111}.
Fracture:Splintery, Sub-Conchoidal
Density (measured):5.94 - 7.29 g/cm3

Crystallography of Monimolite

Crystal System:Isometric
Class (H-M):m3m (4/m 3 2/m) - Hexoctahedral
Cell Parameters:a = 10.47Å
Unit Cell Volume:V 1,147.73 ų (Calculated from Unit Cell)
Morphology:Crystals are octahedra with {113}, or less commonly, cube-dominant, with {111} and {011}.
Comment:Class is probable.

Optical Data of Monimolite

Type:Isotropic
RI values: n = 2.06
Maximum Birefringence:δ = 0.000 - Isotropic minerals have no birefringence
Surface Relief:Very High
Comments:May exhibit weak anisotropism.

Relationship of Monimolite to other Species

Related Minerals - Nickel-Strunz Grouping):

- +
4.DH.05Brannerite
(U
4+
 
,REE,Th,Ca)(Ti,Fe
3+
 
,Nb)
 
2
(O,OH)
 
6
4.DH.05Orthobrannerite
U
4+
 
U
6+
 
Ti
 
4
O
 
12
(OH)
 
2
4.DH.05Thorutite
(Th,U,Ca)Ti
 
2
(O,OH)
 
6
4.DH.10Kassite
CaTi
 
2
O
 
4
(OH)
 
2
4.DH.10Lucasite-(Ce)
CeTi
 
2
(O,OH)
 
6
4.DH.15Bariomicrolite (of Hogarth 1977)
4.DH.15Bariopyrochlore (of Hogarth 1977)
4.DH.15Betafite (of Hogarth 1977)
4.DH.15Bismutomicrolite (of Hogarth 1977)
4.DH.15Calciobetafite (of Mazzi & Munno)
4.DH.15Ceriopyrochlore (of Hogarth 1977)
4.DH.15Cesstibtantite
4.DH.15Jixianite
Pb(W,Fe
3+
 
)
 
2
(O,OH)
 
7
4.DH.15Hydropyrochlore
(H
 
2
O,□)
 
2
Nb
 
2
(O,OH)
 
6
(H
 
2
O)
4.DH.15Natrobistantite
4.DH.15Plumbopyrochlore (of Skorobogatova et al.)
4.DH.15Plumbomicrolite (of Hogarth 1977)
4.DH.15Plumbobetafite (of Hogarth 1977)
4.DH.15Stibiomicrolite (of Groat et al.)
4.DH.15Strontiopyrochlore (of Hogarth 1977)
4.DH.15Stannomicrolite (of Hogarth 1977)
4.DH.15Stibiobetafite (of Černý et al.)
4.DH.15Uranpyrochlore (of Hogarth 1977)
(U,Ca,Ce)
 
2
(Nb,Ta)
 
2
O
 
6
(OH,F)
4.DH.15Yttrobetafite (of Hogarth 1977)
4.DH.15Yttropyrochlore (of Hogarth 1977)
4.DH.15Fluornatromicrolite
(Na,Ca,Bi)
 
2
Ta
 
2
O
 
6
F
4.DH.15Bismutopyrochlore (of Chukanov et al.)
4.DH.15Hydrokenoelsmoreite
◻
 
2
W
 
2
O
 
6
(H
 
2
O)
4.DH.20Bismutostibiconite
Bi(Sb
5+
 
,Fe
3+
 
)
 
2
O
 
7
4.DH.20Oxyplumboroméite
Pb
 
2
Sb
 
2
O
 
6
O
4.DH.20Cuproroméite
Cu
 
2
Sb
 
2
(O,OH)
 
7
4.DH.20Stetefeldtite
Ag
 
2
Sb
 
2
(O,OH)
 
7
4.DH.20Stibiconite
4.DH.25Rosiaite
PbSb
5+
2
O
 
6
4.DH.30Zirconolite
CaZrTi
 
2
O
 
7
4.DH.35Liandratite
U(Nb,Ta)
 
2
O
 
8
4.DH.35Petscheckite
UFe(Nb,Ta)
 
2
O
 
8
4.DH.40Ingersonite
Ca
 
3
MnSb
 
4
O
 
14
4.DH.45Pittongite
Na
 
0.22
(W,Fe
3+
 
)(O,OH)
 
3
 · 0.44H
 
2
O
Related Minerals - Hey's Index Grouping:

- +
24.3.2Derbylite
Fe
3+
4
Ti
 
3
Sb
3+
 
O
 
13
(OH)
24.3.3Hemloite
(Ti,V
3+
 
,Fe
3+
 
,Al)
 
12
(As
3+
 
,Sb
3+
 
)
 
2
O
 
23
(OH)
24.3.4Nadorite
PbSbClO
 
2
24.3.5Oxyplumboroméite
Pb
 
2
Sb
 
2
O
 
6
O
24.3.7Thorikosite
Pb
 
3
Cl
 
2
(OH)(SbO
 
3
,AsO
 
3
)

Other Names for Monimolite

Synonyms:
Jujuyite
Other Languages:
German:Jujuyit
Monimolit
Spanish:Jujuyita
Monimolita

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 Monimolite

Reference List:

- +
Igelström (1865) Ak. Stockholm, Öfv.: 22: 227.

Nordenskiöld (1870) Ak. Stockholm, Öfversigy: 27: 550.

Nordenskiöld (1877) Geologiska Föeningens I Stockholm. Förhandlinger, Stockholm: 3: 379.

Flink (1887) Ak. Stockholm, Bihang: 12, Part 2, [2]: 35.

Palache, C., Berman, H., & Frondel, C. (1951), The System of Mineralogy of James Dwight Dana and Edward Salisbury Dana, Yale University 1837-1892, Volume II. John Wiley and Sons, Inc., New York, 7th edition, revised and enlarged, 1124 pp.: 1023.

Mason, B. and C.J. Vitaliano (1953) The mineralogy of the antimony oxides and antimonates. Mineralogical Magazine: 30: 100–112.

Arkiv för Mineralogi och Geologi (1969): 4: 525.

Anthony, J.W., Bideaux, R.A., Bladh, K.W., and Nichols, M.C. (1997) Handbook of Mineralogy, Volume III. Halides, Hydroxides, Oxides. Mineral Data Publishing, Tucson, AZ, 628pp.: 379.

Internet Links for Monimolite

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    • Localities for Monimolite

    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.
    Kazakhstan
     
    • Northern Kazakhstan Province (Soltüstik Qazaqstan Oblysy; Severo-Kazakhstanskaya Oblast')
      • Stepnyak
    		P.M. Kartashov data
    Sweden
     
    • Värmland
      • Filipstad
    		Nysten, P., Holtstam, D. and Jonsson, E. (1999) The Långban minerals. In Långban - The mines,their minerals, geology and explorers (D. Holtstam and J. Langhof, eds.), Swedish Museum of Natural History and Raster Förlag, Stockholm & Chr. Weise Verlag, Munich, pp. 89-183.
        • Persberg district
          • Pajsberg
    		Igelström (1865) Öfversigy KVA handl, pp. 227-9; Palache, C., Berman, H., & Frondel, C. (1951), The System of Mineralogy of James Dwight Dana and Edward Salisbury Dana, Yale University 1837-1892, Volume II: 1023..
    No reference listed
    USA
     
    • Utah
      • Tooele Co.
        • Deep Creek Mts
          • Gold Hill District (Clifton District)
            • Gold Hill
    		UGMS Bull 117 Minerals and Mineral Localities of Utah
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