General Information:
Chemical Formula:ThSiO4
Composition:(Molecular Weight = 324.12 gm)Thorium 71.59 %
ThSilicon 8.67 %
SiOxygen 19.74 %
O Empirical Formula: Th(SiO4)
Environment:Augite-syenite rocks.
Locality:Island of Lovo, Norway
Name Origin:From the presence of the element Thorium, a highly radioactive material.
Physical Properties: Cleavage:[110] Poor
Color:brownish yellow, brownish black, yellow, dark brown, or orange.
Density:4 - 6.7, Average = 5.35
Diaphaniety:Subtransparent to subtranslucent
Habits:Prismatic - Crystals Shaped like Slender Prisms (e.g. tourmaline)., Granular - Generally occurs as anhedral to subhedral crystals in matrix., Massive - Granular - Common texture obser ved in granite and other igneous rock.
Hardness:5 - Apatite
Luminescence:None.
Luster:Resinous
Streak:light brown
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