3 ms·
From wikipedia: "Monazite is a reddish-brown phosphate mineral containing rare earth metals and is an important source of thorium, lanthanum, and cerium. It oc
by ojbyrne 17y ago
From wikipedia:
"Monazite is a reddish-brown phosphate mineral containing rare earth metals and is an important source of thorium, lanthanum, and cerium. It occurs usually in small isolated crystals."
I'm guessing that's not what you meant.