Monazite-(Ce) from Elk Mountain Mining District, New Mexico
Weight: 81 Grams
Size: 34x33x30mm
Locality: Cow Creek, Elk Mountain Mining District, San Miguel County, New Mexico, USA
Ex. David H. Garske Collection
10% to 30% thorium by mass
0.5% to 3% uranium by mass.
Monazite-(Ce) is a radioactive rare-earth phosphate mineral found around the world and is radioactive due to the presence of thorium and uranium within its crystal structure. It forms prismatic crystals with striated surfaces, typically measuring a few millimeters to a few centimeters. The color of these crystals varies, but they often display shades of brown, reddish-brown, or yellow-brown. Some crystals may exhibit a translucent to transparent appearance, allowing light to pass through and creating a beautiful play of colors. The luster of monazite-(Ce) is usually vitreous or resinous, enhancing its overall visual appeal.
Monazite-(Ce) is known for a high cerium content, which gives it the specific name, monazite-(Ce). Additionally, they contain other rare-earth elements such as lanthanum, neodymium, and praseodymium. These elements contribute to the crystal’s unique properties and make it a sought-after specimen among collectors and researchers.
Geiger Counter Not Included
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