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Monimolite

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

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Formula:
(Pb,Ca,Fe)
 
3
Sb
 
2
O
 
7
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 secondary mineral occurring in Calcite veins in iron and manganese deposits and in the oxidized zone of a polymetallic deposit.

Compare bindheimite.

Classification of Monimolite

IMA status:Questionable/Doubtful 1865
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, 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.

Chemical Properties of Monimolite

Formula:
(Pb,Ca,Fe)
 
3
Sb
 
2
O
 
7
Essential elements:O, Pb, Sb
All elements listed in formula:Ca, Fe, O, Pb, Sb
Common Impurities:Fe

Relationship of Monimolite to other Species

Related Minerals - Nickel-Strunz Grouping):

- +
4.DH.05Brannerite
(U
4+
 
,Ca)(Ti,Fe
3+
 
)
 
2
O
 
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.15Alumotungstite
(W,Al)(O,OH)
 
3
4.DH.15Bariomicrolite
Ba(Ta,Nb)
 
2
(O,OH)
 
7
4.DH.15Bariopyrochlore
(Ba,Sr)
 
2-x
(Nb,Ti)
 
2
(O,OH)
 
7
4.DH.15Betafite
(Ca,U)
 
2
(Ti,Nb)
 
2
O
 
6
(OH)
4.DH.15Bismutomicrolite
(Bi,Ca)(Ta,Nb)
 
2
O
 
6
(OH)
4.DH.15Calciobetafite
(Ca,RE,Th,U)
 
2
(Nb,Ta,Ti)
 
2
O
 
7
4.DH.15Ceriopyrochlore-(Ce)
(Ce,Ca,Y)
 
2
(Nb,Ta)
 
2
O
 
6
(OH,F)
4.DH.15Cesstibtantite
(Cs,Na)SbTa
 
4
O
 
12
4.DH.15Ferritungstite
(W,Fe
3+
 
)(O,OH)
 
3
4.DH.15Jixianite
Pb(W,Fe
3+
 
)
 
2
(O,OH)
 
7
4.DH.15Kalipyrochlore
(K,Sr)
 
2-x
Nb
 
2
O
 
6
(O,OH)·nH
 
2
O
4.DH.15Microlite
(Ca,Na)
 
2
Ta
 
2
O
 
6
(O,OH,F)
4.DH.15Natrobistantite
(Na,Cs)Bi(Ta,Nb,Sb)
 
4
O
 
12
4.DH.15Plumbopyrochlore
(Pb,Ca,Y,U)
 
2-x
(Nb,Ta,Ti)
 
2
O
 
6
(OH,O)
4.DH.15Plumbomicrolite
(Pb,Ca,U)
 
2-x
(Ta,Nb,Sn)
 
2
O
 
6
(O,[])
4.DH.15Plumbobetafite
(Pb,U,Ca)(Ti,Nb)
 
2
O
 
6
(OH,F)
4.DH.15Pyrochlore
(Ca,Na)
 
2
Nb
 
2
O
 
6
(OH,F)
4.DH.15Stibiomicrolite
(Sb,Ca,Na)
 
2
(Ta,Nb)
 
2
O
 
7
4.DH.15Strontiopyrochlore
(Sr,Ce,Ca)
 
2-x
(Nb,Fe)
 
2
(O,OH)
 
7
4.DH.15Stannomicrolite
(Sn,Fe,Mn)
 
2
(Ta,Nb,Sn)
 
2
(O,OH)
 
7
4.DH.15Stibiobetafite
(Sb,Ca)
 
2
(Ti,Nb,Ta)
 
2
(O,OH)
 
7
4.DH.15Uranmicrolite
(U,Ca,Ce)
 
2
(Ta,Nb)
 
2
O
 
6
(OH,F)
4.DH.15Uranpyrochlore
(U,Ca,Ce)
 
2
(Nb,Ta)
 
2
O
 
6
(OH,F)
4.DH.15Yttrobetafite-(Y)
(Y,U,Ce)
 
2
(Ti,Nb,Ta)
 
2
O
 
6
OH
4.DH.15Yttropyrochlore-(Y)
(Y,Ca,U)
 
1-2
(Nb,Ta,Ti)
 
2
(O,OH)
 
7
4.DH.15Fluornatromicrolite
(Na,Ca,Bi)
 
2
Ta
 
2
O
 
6
F
4.DH.15Bismutopyrochlore
(Bi,U,Ca,Pb)
 
1+x
(Nb,Ta)
 
2
O
 
6
(OH)·nH
 
2
O
4.DH.15Thorian Pyrochlore
4.DH.15Elsmoreite
WO
 
3
·0.5H
 
2
O
4.DH.20Bismutostibiconite
Bi(Sb
5+
 
,Fe
3+
 
)
 
2
O
 
7
4.DH.20Bindheimite
Pb
 
2
Sb
 
2
O
 
6
(O,OH)
4.DH.20Partzite
Cu
 
2
Sb
 
2
(O,OH)
 
7
4.DH.20Roméite
(Ca,Fe,Mn,Na)
 
2
(Sb,Ti)
 
2
O
 
6
(O,OH,F)
4.DH.20Stetefeldtite
Ag
 
2
Sb
 
2
(O,OH)
 
7
4.DH.20Stibiconite
Sb
3+
 
Sb
5+
2
O
 
6
(OH)
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:

- +
24.3.1Lewisite
(Ca,Fe,Na)
 
2
(Sb,Ti)
 
2
(O,OH)
 
7
24.3.2Derbylite
(Fe,Fe,Ti)
 
7
SbO
 
13
(OH)
24.3.3Hemloite
(As,Sb)
 
2
(Ti,V,Fe,Al)
 
12
O
 
23
(OH)
24.3.4Nadorite
PbSb[O
 
2
|Cl]
24.3.5Bindheimite
Pb
 
2
Sb
 
2
O
 
6
(O,OH)
24.3.7Thorikosite
Pb
 
3
[OH|(SbO
 
3
,AsO
 
3
)|Cl
 
2
]

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

    Hide Locality List
    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.
    (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
     
    • Soltüstik Qazaqstan Oblysy (Severo-Kazakhstanskaya Oblast'; Northern-Kazakhstan 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.
        • 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
    Mineral and/or Locality
    Google
     
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