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Esquema molecular
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Dumontite
Pb2(UO2)3(PO4)2(OH)4·3H2O
Description
Dumontite is a rare lead uranyl phosphate mineral. It is typically found in the oxidation zones of uranium deposits.
Chemical composition
Chemical formula
Pb2(UO2)3(PO4)2(OH)4·3H2O
Classification
fosfatos
Crystal system
monoclínico
Luster
Vítreo a sedoso
Streak
Amarillo claro
Density
5.9 g/cm³
Mohs Scale — 3/10
1
2
3
4
5
6
7
8
9
10
Referencia: Calcita
Color
#FFBF00
#F1C40F
Amarillo ámbar
Usos
Uso cotidiano
None, it is a collector's mineral due to its radioactivity.
Uso industrial
Reference mineral for uranium mineralogy studies and radiological research.
Similar minerals
Compare species
| Properties | Dumontite | Torbernite | Autunite |
|---|---|---|---|
| Chemical formula | Pb2(UO2)3(PO4)2(OH)4·3H2O | Cu(UO2)2(PO4)2·8-12H2O | Ca(UO2)2(PO4)2·10-12H2O |
| Classification | Phosphates | Phosphates | Phosphates |
| Crystal system | monoclínico | tetragonal | tetragonal |
| Hardness | 3 | 2.5 | 2.5 |
| Density | 5.9 g/cm³ | 3.2 g/cm³ | 3.1 g/cm³ |
| Luster | Vítreo a sedoso | Vítreo a nacarado | Perlado a subvítreo |
| Streak | Amarillo claro | Verde claro | Amarillo pálido |
| Cleavage | Unknown | Unknown | Unknown |
| Transparency | Unknown | Unknown | Unknown |
Similar minerals: Parsonsita · Torbernita · Autunita
Derivatives and uses
It is not used to extract derivatives due to its rarity and radioactivity.
Geographic distribution
Extraction countries: R.D. Congo, Francia, Alemania
Periodic table
Contains elements: Pb · U · O · P · H
H
Hydrogen
#1 · Nonmetals
Atomic mass1.008 u
Density0.0899 g/cm³
Melting point-259.2 °C
Boiling point-252.9 °C
StateGas
Alkali metalsAlkaline earth metalsTransition metalsPost-transition metalsMetalloidsNonmetalsHalogensNoble gasesLanthanidesActinides