Guilleminite

Overview

Ba(UO2)3(SeO3)2O2·3(H2O)
Fluorescence: none	Very Strongly Radioactive	Magnetic: no

Description

Physical Properties

Property	Value
Density	4.88 g/cc
Hardness - Mohs	Guilleminite - 2  10 Diamond 9 Carborundum 8 Topaz 7 Quartz 6 Orthoclase 5 Apatite 4 Fluorite 3 Calcite 2 Gypsum 1 Talc
Color	greenish yellow, yellow
Streak	light yellow

Crystal Properties

Property	Value
Crystal structure	orthorhombic - pyramidal
Cleavage	perfect
Tenacity	brittle
Fracture	brittle
Luster	waxy

Similar Minerals

Dana Number : 34.07.03.01

Class: 34

Group: 34.07

Subgroup: 34.07.03 - guilleminite

Dana Number	Mineral Name	Formula
34.07.03.01	guilleminite	Ba(UO2)3(SeO3)2O2·3(H2O)

Nickel-Strunz Number : 04.JJ.10

Group : 04

Subgroup : JJ

Nickel-Strunz Number	Mineral Name	Formula
04.JJ.10	guilleminite	Ba(UO2)3(SeO3)2O2·3(H2O)

Specimens

Localities

Uses