|
gptkbp:instanceOf
|
granite
|
|
gptkbp:alterationProduct
|
gptkb:uraninite
pyrochlore
gummite
|
|
gptkbp:associatedMinerals
|
gptkb:gadolinite
feldspar
quartz
columbite
fergusonite
|
|
gptkbp:category
|
oxide mineral
|
|
gptkbp:chemicalFormula
|
(YFe3+)(Nb,Ta)O4
|
|
gptkbp:cleavage
|
none
|
|
gptkbp:color
|
black
|
|
gptkbp:containsElement
|
gptkb:uranium
gptkb:yttrium
gptkb:niobium
iron
rare earth elements
thorium
tantalum
|
|
gptkbp:containsMineral
|
gptkb:samarskite_group
|
|
gptkbp:crystalHabit
|
massive
prismatic
|
|
gptkbp:crystalSystem
|
orthorhombic
|
|
gptkbp:density
|
5.6–6.2 g/cm³
|
|
gptkbp:discoveredIn
|
gptkb:Russia
1847
|
|
gptkbp:event
|
alkaline igneous rocks
granite pegmatites
|
|
gptkbp:fracture
|
conchoidal
|
|
gptkbp:hardnessMohs
|
5-6
|
|
https://www.w3.org/2000/01/rdf-schema#label
|
Samarskite
|
|
gptkbp:IMA_symbol
|
Smk
|
|
gptkbp:luster
|
submetallic
|
|
gptkbp:namedAfter
|
gptkb:Vassili_Samarsky-Bykhovets
|
|
gptkbp:notablePlace
|
gptkb:Madagascar
gptkb:Norway
gptkb:Minas_Gerais,_Brazil
gptkb:Ilmen_Mountains,_Russia
gptkb:Spruce_Pine,_North_Carolina,_USA
|
|
gptkbp:radioactive
|
true
|
|
gptkbp:radioactivitySource
|
gptkb:uranium
thorium
|
|
gptkbp:relatedTo
|
samarium
|
|
gptkbp:streak
|
dark reddish brown
|
|
gptkbp:transparency
|
opaque
|
|
gptkbp:uses
|
source of rare earth elements
source of uranium
|
|
gptkbp:bfsParent
|
gptkb:Samarium
|
|
gptkbp:bfsLayer
|
7
|