Xenotime-(Y)

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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