Moluranite
A valid IMA mineral species - grandfathered
This page is currently not sponsored. Click here to sponsor this page.
About Moluranite
Formula:
H4U4+(UO2)3(MoO4)7 · 18H2O
Colour:
Black
Lustre:
Resinous
Hardness:
3 - 4
Specific Gravity:
4.
Crystal System:
Amorphous
Name:
Named for the composition, that includes MOLybdenum and URANium.
This page provides mineralogical data about Moluranite.
Unique Identifiers
Mindat ID:
2744
Long-form identifier:
mindat:1:1:2744:7
GUID
(UUID V4):
(UUID V4):
e2213baa-bd59-447d-b346-0668b633c29e
IMA Classification of Moluranite
Approved, 'Grandfathered' (first described prior to 1959)
First published:
1959
Classification of Moluranite
7.HA.15
7 : SULFATES (selenates, tellurates, chromates, molybdates, wolframates)
H : Uranium and uranyl molybdates and wolframates
A : With U4+
7 : SULFATES (selenates, tellurates, chromates, molybdates, wolframates)
H : Uranium and uranyl molybdates and wolframates
A : With U4+
49.1.2.1
49 : HYDRATED MOLYBDATES AND TUNGSTATES
1 : Acid Hydrated Molybdates and Tungstates
49 : HYDRATED MOLYBDATES AND TUNGSTATES
1 : Acid Hydrated Molybdates and Tungstates
27.3.9
27 : Sulphites, Chromates, Molybdates and Tungstates
3 : Molybdates
27 : Sulphites, Chromates, Molybdates and Tungstates
3 : Molybdates
Mineral Symbols
As of 2021 there are now IMA–CNMNC approved mineral symbols (abbreviations) for each mineral species, useful for tables and diagrams.
| Symbol | Source | Reference |
|---|---|---|
| Mlu | IMA–CNMNC | Warr, L.N. (2021). IMA–CNMNC approved mineral symbols. Mineralogical Magazine, 85(3), 291-320. doi:10.1180/mgm.2021.43 |
Physical Properties of Moluranite
Resinous
Transparency:
Translucent
Colour:
Black
Comment:
Brown in thin fragments
Hardness:
3 - 4 on Mohs scale
Tenacity:
Brittle
Density:
4. g/cm3 (Measured)
Optical Data of Moluranite
Type:
Isotropic
RI values:
n = 1.97 - 1.98
Birefringence:
Isotropic minerals have no birefringence
Surface Relief:
Very High
Colour in reflected light:
pale gray
Chemistry of Moluranite
Mindat Formula:
H4U4+(UO2)3(MoO4)7 · 18H2O
Elements listed:
Crystallography of Moluranite
Crystal System:
Amorphous
Comment:
Amorphous
X-Ray Powder Diffraction
Powder Diffraction Data:
| d-spacing | Intensity |
|---|---|
| 4.17 Å | (10) |
| 1.314 Å | (6) |
| 1.305 Å | (6) |
| 3.44 Å | (5) |
| 2.58 Å | (5) |
| 2.12 Å | (5) |
| 2.03 Å | (5) |
Geological Environment
Paragenetic Mode(s):
| Paragenetic Mode | Earliest Age (Ga) |
|---|---|
| Stage 7: Great Oxidation Event | <2.4 |
| 47a : [Near-surface hydration of prior minerals] | |
| 47f : [Uranyl (U⁶⁺) minerals] |
Type Occurrence of Moluranite
General Appearance of Type Material:
Colloform growths.
Associated Minerals at Type Locality:
Reference:
Soboleva, M.V., Pudovkina, I.A. (1957) Moluranite. in Mineraly Urana, Spravochnik (Uranium Minerals Handbook, Moscow): 252-253.
Other Language Names for Moluranite
German:Moluranit
Spanish:Moluranita
Related Minerals - Strunz-mindat Grouping
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 Moluranite
mindat.org URL:
https://www.mindat.org/min-2744.html
Please feel free to link to this page.
Please feel free to link to this page.
Search Engines:
External Links:
Mineral Dealers:
References for Moluranite
Reference List:
Localities for Moluranite
symbol to view information about a locality.
The Locality List
- 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).
All localities listed without proper references should be considered as questionable.
China | |
| Mingfa Zhang et al. (2005) |
| MENG et al. (2010) |
Egypt | |
| Hussein et al. (1988) |
| Bisher (2012) |
Mexico | |
| Analysis by and from the collection of ... |
Russia (TL) | |
| Pekov (1998) |
Quick NavTopAbout MoluraniteUnique IdentifiersIMA Classification Classification Mineral SymbolsPhysical Properties Optical Data Chemistry Crystallography X-Ray Powder DiffractionGeological EnvironmentType Occurrence Other LanguagesStrunz-MindatOther InformationInternet Links References Localities Locality List
Picacho, Bacoachi, Bacoachi Municipality, Sonora, Mexico