Color - is most commonly various shades of brown but also gray, greenish brown, muted red and yellow
Luster- is vitreous to resinous
Transparency- Crystals are translucent to opaque
Cleavage is perfect in two prismatic directions
Fracture is uneven
Hardness is 4 - 5
Streak is pale brown to yellow or red
Other Characteristics- Trace amounts of uranium and other rare earth elements may render crystals slightly radioactive Its found in Arendal, Hittero, and Tvedestrand ; Madagascar; several locations in Brazil and also in the United States in Colorado, California, Georgia and North Carolina.
Chemical Formula- YPO4
A
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