Grayite
Grayite, ThPO4 • (H2O), is a thorium phosphate mineral of the Rabdophane group first discovered in 1957 by S.H.U. Bowie in Rhodesia. It is of moderate hardness occurring occasionally in aggregates of hexagonal crystals occasionally but more commonly in microgranular/cryptocrystalline masses. Due to its thorium content, grayite displays some radioactivity although it is only moderate and the mineral displays powder XRD peaks without any metamict-like effects. The color of grayite is most commonly observed as a light to dark reddish brown but has also been observed as lighter yellows with grayish tints. It has a low to moderate hardness with a Mohs hardness of 3-4 and has a specific gravity of 3.7-4.3. It has been found in both intrusive igneous and sedimentary environments.
primaryTopic
Grayite
Grayite, ThPO4 • (H2O), is a thorium phosphate mineral of the Rabdophane group first discovered in 1957 by S.H.U. Bowie in Rhodesia. It is of moderate hardness occurring occasionally in aggregates of hexagonal crystals occasionally but more commonly in microgranular/cryptocrystalline masses. Due to its thorium content, grayite displays some radioactivity although it is only moderate and the mineral displays powder XRD peaks without any metamict-like effects. The color of grayite is most commonly observed as a light to dark reddish brown but has also been observed as lighter yellows with grayish tints. It has a low to moderate hardness with a Mohs hardness of 3-4 and has a specific gravity of 3.7-4.3. It has been found in both intrusive igneous and sedimentary environments.
has abstract
Grayite, ThPO4 • (H2O), is a t ...... and sedimentary environments.
@en
La grayite è un minerale.
@it
Wikipage page ID
48,120,666
Wikipage revision ID
739,949,810
birefringence
Moderate with max at δ = 1.660
boxwidth
category
color
Pale yellow, yellow, yellowish gray, often a dark reddish brown
dana
diaphaneity
Semitransparent
fluorescence
May fluoresce green or yellow under short wave UV
habit
Cryptocrystalline Aggregate
luster
Resinous to waxy to greasy
opticalprop
Other
refractive
symmetry
system
Trapezohedral class
unit cell
c = 6.396 [Å]; Z = 3
hypernym
comment
Grayite, ThPO4 • (H2O), is a t ...... and sedimentary environments.
@en
La grayite è un minerale.
@it
label
Grayite
@en
Grayite
@it
wasDerivedFrom
isPrimaryTopicOf
name
Grayite
@en