General Information:
Chemical Formula:
YPO4
Composition:
(Molecular Weight = 183.88 gm)
Yttrium 48.35 % Y
Phosphorus 16.84 % P
Oxygen 34.80 % O
Empirical Formula:
Y(PO4)
IMA Status:
Approved IMA 1987
Name Origin:
From the Greek xenos - "foreign" and time - "honor."
Physical Properties:
Cleavage:
[100] Perfect
Color:
yellowish brown, greenish brown, gray, reddish brown, or brown.
Density:
4.4 - 5.1, Average = 4.75
Diaphaniety:
Opaque
Habits:
Radial - Crystals radiate from a center without producing stellar forms (e.g. stibnite), Prismatic - Crystals Shaped like Slender Prisms (e.g. tourmaline)., Massive - Granular - Commo n texture observed in granite and other
Hardness:
4-5 - Fluorite-Apatite
Luminescence:
None.
Luster:
Vitreous - Greasy
Streak:
white
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