monazite – מילון אנגלי-אנגלי
monazite
n.
(Geology) type of brown mineral (contains phosphate, cerium, lanthanum, and thorium)
Monazite
Monazite is a reddish-brown
phosphate mineral containing
rare earth metals. It occurs usually in small isolated
crystals. It has a hardness of 5.0 to 5.5 on the
Mohs scale of mineral hardness and is relatively
dense, about 4.6 to 5.7 g/cm
3. There are at least four different kinds of monazite, depending on relative elemental composition of the mineral:
- Monazite-(Ce), (Ce, La, Nd, Th)PO4 (the most common member)
- Monazite-(La), (La, Ce, Nd)PO4
- Monazite-(Nd), (Nd, La, Ce)PO4
- Monazite-(Sm), (Sm, Gd, Ce, Th)PO4
monazite
Noun
1. a reddish-brown mineral containing rare earth metals; an important source of thorium and cerium
(hypernym) mineral
(substance-meronym) cerium, Ce, atomic number 58
monazite
nf.
monazite (Geology), type of brown mineral (contains phosphate, cerium, lanthanum, and thorium)
Monazite
(n.)
A mineral occurring usually in small isolated crystals, -- a phosphate of the cerium metals.
Webster's Revised Unabridged Dictionary (1913), edited by Noah Porter.
About
