Monimolite
A material that is NOT an approved mineral species
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About Monimolite
Formula:
Pb2Sb5+2O7
Formula as recorded in current (2018) IMA mineral list.
Colour:
Yellow, gray-green, dark brown
Lustre:
Adamantine, Greasy
Hardness:
4½ - 6
Specific Gravity:
5.94 - 7.29
Crystal System:
Isometric
Name:
From the Greek ÎŒÏÏ
ÄÎŒÎżÏ = "monimos" for "stable," in allusion to the difficulty with which it is decomposed chemically.
First Recorded Locality:
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 (IgelstroÌm 1865, Mason & Vitaliano 1953) is almost certainly identical with oxyplumboromĂ©ite, but needs re-examination. According to HĂ„lenius and Bosi (2013), monimolite should be discredited.
The problematical species monimolite (IgelstroÌm 1865, Mason & Vitaliano 1953) is almost certainly identical with oxyplumboromĂ©ite, but needs re-examination. According to HĂ„lenius and Bosi (2013), monimolite should be discredited.
Unique Identifiers
Mindat ID:
2757
Long-form identifier:
mindat:1:1:2757:7
GUID
(UUID V4):
(UUID V4):
1111411c-d902-4c36-9d83-dcdb557d686e
IMA Classification of Monimolite
'Grandfathered' (first described prior to 1959), Questionable
Classification of Monimolite
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
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
44.1.1.4
44 : ANTIMONATES
1 : A2X2O6(O,OH,F)
44 : ANTIMONATES
1 : A2X2O6(O,OH,F)
24.3.6
24 : Antimonates and Antimonites
3 : Antimonates of Ti and Pb
24 : Antimonates and Antimonites
3 : Antimonates of Ti and Pb
Mineral Symbols
As of 2021 there are now IMAâCNMNC approved mineral symbols (abbreviations) for each mineral species, useful for tables and diagrams.
Symbol | Source | Reference |
---|---|---|
Mml | IMAâCNMNC | Warr, L.N. (2021). IMAâCNMNC approved mineral symbols. Mineralogical Magazine, 85(3), 291-320. doi:10.1180/mgm.2021.43 |
Physical Properties of Monimolite
Adamantine, Greasy
Transparency:
Opaque
Colour:
Yellow, gray-green, dark brown
Streak:
Straw-yellow to cinnamon-brown
Hardness:
4½ - 6 on Mohs scale
Cleavage:
Poor/Indistinct
Indistinct on {111}.
Indistinct on {111}.
Fracture:
Splintery, Sub-Conchoidal
Density:
5.94 - 7.29 g/cm3 (Measured)
Optical Data of Monimolite
Type:
Isotropic
RI values:
n = 2.06
Birefringence:
Isotropic minerals have no birefringence
Surface Relief:
Very High
Comments:
May exhibit weak anisotropism.
Chemistry of Monimolite
Mindat Formula:
Pb2Sb5+2O7
Formula as recorded in current (2018) IMA mineral list.
Formula as recorded in current (2018) IMA mineral list.
Elements listed:
Common Impurities:
Fe
Crystallography of Monimolite
Crystal System:
Isometric
Class (H-M):
m3m (4/m 3 2/m) - Hexoctahedral
Cell Parameters:
a = 10.47 Å
Unit Cell V:
1,147.73 Ă
Âł (Calculated from Unit Cell)
Morphology:
Crystals are octahedra with {113}, or less commonly, cube-dominant, with {111} and {011}.
Comment:
Class is probable.
Geological Environment
Paragenetic Mode(s):
Paragenetic Mode | Earliest Age (Ga) |
---|---|
Near-surface Processes | |
23 : Subaerial aqueous alteration by non-redox-sensitive fluids (see also #47) | |
Stage 7: Great Oxidation Event | <2.4 |
47d : [Arsenates, antimonates, selenates, bismuthinates] | |
47h : [Near-surface oxidized, dehydrated minerals] |
First Recorded Occurrence of Monimolite
Geological Setting of First Recorded Material:
Calcite veins in an iron and manganese deposit.
Associated Minerals at First Recorded Locality:
Synonyms of Monimolite
Other Language Names for Monimolite
Spanish:Jujuyita
Monimolita
Monimolita
Common Associates
Associated Minerals Based on Photo Data:
Related Minerals - Strunz-mindat Grouping
4.DH. | Fluornatropyrochlore | (Na,Pb,Ca,REE,U)2Nb2O6F |
4.DH. | Roméite Group | A2(Sb5+)2O6Z |
4.DH. | Hydroxykenomicrolite | (â»,Na,Sb3+)2Ta2O6(OH) |
4.DH. | Fluornatroroméite | (Na,Ca)2Sb2(O,OH)6F |
4.DH. | Oxyplumboroméite | Pb2Sb2O6O |
4.DH. | Cesiokenopyrochlore | â»Nb2(O,OH)6(Cs,â») |
4.DH. | Oxyyttrobetafite-(Y) | Y2Ti2O6O |
4.DH.05 | Brannerite | UTi2O6 |
4.DH.05 | Orthobrannerite | U4+U6+Ti4O12(OH)2 |
4.DH.05 | Thorutite | (Th,U,Ca)Ti2(O,OH)6 |
4.DH.10 | Kassite | CaTi2O4(OH)2 |
4.DH.10 | Lucasite-(Ce) | CeTi2(O,OH)6 |
4.DH.15 va | Alumotungstite | â»2W2O6(H2O) |
4.DH.15 | Bismutomicrolite (of Hogarth 1977) | |
4.DH.15 | Hydroplumboelsmoreite | (Pb,â»)(W,Fe3+)2O6 · H2O |
4.DH.15 | Hydropyrochlore | (H2O,â»)2Nb2(O,OH)6(H2O) |
4.DH.15 | Plumbomicrolite (of Hogarth 1977) | |
4.DH.15 | Stibiomicrolite (of Groat et al.) | |
4.DH.15 | Strontiopyrochlore (of Hogarth 1977) | A2Nb2(O,OH)6Z |
4.DH.15 | Fluornatromicrolite | (Na1.5Bi0.5)Ta2O6F |
4.DH.15 | Bismutopyrochlore (of Chukanov et al.) | (Bi,Ca,U,Pb)2-xNb2(O,OH)6(OH) |
4.DH.15 | Hydrokenoelsmoreite | â»2W2O6(H2O) |
4.DH.15 | Fluorcalciomicrolite | (Ca,Na)2(Ta,Nb)2O6F |
4.DH.15 | Oxycalciobetafite | Ca2(Ti,Nb)2O6O |
4.DH.15 va | Yttromicrolite (of Hogarth) | (Ca,Y3+,U,Na)2-x(Ta,Nb,Ti,Fe3+)2O7 |
4.DH.15 | Oxynatropyrochlore | (Na,Ca,U)2Nb2O6(O,OH) |
4.DH.15 | Hydroxycalciopyrochlore | (Ca,Na,U,â»)2(Nb,Ti)2O6(OH) |
4.DH.15 | Fluorcalciopyrochlore | (Ca,Na)2(Nb, Ti)2O6F |
4.DH.15 | Oxycalciopyrochlore | Ca2Nb2O6O |
4.DH.15 | Fluorstrontiopyrochlore | (Sr,â»)2Nb2(O,OH)6F |
4.DH.15 | Oxyplumbopyrochlore | Pb2Nb2O6O |
4.DH.15 | Kenoplumbopyrochlore | (Pb,â»)Nb2O6(â»,O) |
4.DH.15 | Oxyyttropyrochlore-(Y) | (Y,â»)2Nb2O6O |
4.DH.15 | Fluorkenopyrochlore | (â»,Sr,Ce,Ca,Na)2(Nb,Ti)2O6F |
4.DH.15 | Oxyuranobetafite | (U,Ca,â»)2(Ti,Nb)2O6O |
4.DH.15 | Oxycalciomicrolite | Ca2Ta2O6O |
4.DH.15 | Oxystannomicrolite | Sn2Ta2O6O |
4.DH.15 | Kenoplumbomicrolite | (Pb,â»)2Ta2O6(â»,OH,O) |
4.DH.15 | Oxystibiomicrolite | (Sb3+,Ca)2Ta2O6O |
4.DH.15 | Hydromicrolite | (H2O,â»)2Ta2(O,OH)6(H2O) |
4.DH.15 | Hydrokenomicrolite | (â»,H2O)2Ta2(O,OH)6(H2O) |
4.DH.15 | Hydroxymanganopyrochlore | (Mn2+,Th,Na,Ca,REE)2(Nb,Ti)2O6(OH) |
4.DH.15 | Hydroxycalciomicrolite | Ca1.5Ta2O6(OH) |
4.DH.15 | Fluorplumbopyrochlore | (Pb,Y,Th,U,Na,Ca)2-x(Nb,Ti)2O6F |
4.DH.15 | Hydroxyplumbopyrochlore | (Pb1.5â»0.5)Nb2O6(OH) |
4.DH.15 | Oxynatromicrolite | (Na,Ca,U)2(Ta,Nb)2O6(O,F) |
4.DH.15 | Fluorhydropyrochlore | |
4.DH.15 | Hydroxykenoelsmoreite | (â»,Pb)2(W,Fe3+,Al)2(O,OH)6(OH) |
4.DH.15 | Hydrokenopyrochlore | (â»,x)2Nb2O6(H2O,Cs) |
4.DH.15 | Hydroxykenopyrochlore | (â»,Ce,Ba)2(Nb,Ti)2O6(OH,F) |
4.DH.15 | Hydroxynatropyrochlore | (Na,Ca,Ce)2Nb2O6(OH) |
4.DH.15 | Hydroxynatromicrolite | (Na,Bi3+,â»)2Ta2O6(OH) |
4.DH.15 | Unnamed (Sb-analogue of Hydroxymanganopyrochlor) | (Mn,Ca,Y)2(Sb,Ti)2O6(OH) |
4.DH.15 | Oxybismutomicrolite | (Bi1.33â»0.67)ÎŁ2Ta2O6O |
4.DH.20 | Bindheimite | Pb2Sb2O6O |
4.DH.20 | Hydroxycalcioroméite | (Ca,Sb3+)2(Sb5+,Ti)2O6(OH) |
4.DH.20 | Cuproroméite | Cu2Sb2(O,OH)7 |
4.DH.20 | Stetefeldtite | Ag2Sb2(O,OH)7 |
4.DH.20 | Stibiconite | Sb3+Sb5+2O6(OH) |
4.DH.20 | FluorcalcioromĂ©ite | (Ca,Na,â»)2Sb5+2(O,OH)6F |
4.DH.20 | OxycalcioromeÌite | Ca2Sb2O6O |
4.DH.20 | HydroxyferroromĂ©ite | (Fe2+1.5â»0.5)Sb5+2O6(OH) |
4.DH.25 | Rosiaite | PbSb5+2O6 |
4.DH.30 | Zirconolite | CaZrTi2O7 |
4.DH.30 | Laachite | (Ca,Mn)2Zr2Nb2TiFeO14 |
4.DH.30 | Nöggerathite-(Ce) | (Ce,Ca)2Zr2(Nb,Ti)(Ti,Nb)2Fe2+O14 |
4.DH.30 | Stefanweissite | (Ca,REE)2Zr2(Nb,Ti)(Ti,Nb)2Fe2+O14 |
4.DH.35 | Liandratite | U(Nb,Ta)2O8 |
4.DH.35 | Petscheckite | UFe(Nb,Ta)2O8 |
4.DH.40 | Ingersonite | Ca3Mn2+Sb5+4O14 |
4.DH.45 | Pittongite | Na0.22(W,Fe3+)(O,OH)3 · 0.44H2O |
4.DH.50 | Tazzoliite | Ba4-xNaxTi2Nb3SiO17[PO2(OH)2]x(OH)(1-2x) |
Other Information
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 Monimolite
mindat.org URL:
https://www.mindat.org/min-2757.html
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References for Monimolite
Reference List:
Christy, A. G., Atencio, D. (2013) Clarification of status of species in the pyrochlore supergroup. Mineralogical Magazine, 77 (1) 13-20 doi:10.1180/minmag.2013.077.1.02
Localities for Monimolite
Locality List
- This locality has map coordinates listed.
- This locality has estimated coordinates.
â - 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.
All localities listed without proper references should be considered as questionable.
Sweden | |
| Holtstam et al. (1999) |
Ek (2003) | |
| Igelström (1865) +2 other references |
USA | |
| Hayes et al. (2019) |
| Bullock (1981) |
Quick NavTopAbout MonimoliteUnique IdentifiersIMA Classification Classification Mineral SymbolsPhysical Properties Optical Data Chemistry Crystallography Geological EnvironmentFirst Recorded Occurrence SynonymsOther LanguagesCommon AssociatesStrunz-MindatOther InformationInternet Links References Localities Locality List
Harstigen Mine, Pajsberg, Persberg ore district, Filipstad, VĂ€rmland County, Sweden