Stunorthropite: Sidwillite (greenish or yellow-greenish), stunorthropite, and raydemarkite intergrown in the milky white areas (formed from the alteration of sidwillite). Photo Courtesy NMT
Virgilluethite: green crystals of virgilluethite. Photo Courtesy NMT
Raydemarkite: Colorless, needle-shaped crystals of raydemarkite. Photo Courtesy NMT
NEW MEXICO TECH NEWS RELEASE
Three new minerals were recently discovered in New Mexico and appropriately named to honor prominent New Mexican geologists Ramon S. DeMark, Dr. Virgil W. Lueth, and Dr. Stuart A. Northrop.
The new minerals—raydemarkite, virgilluethite, and stunorthropite—were all discovered on Cookes Peak in Luna County. Specimens of each can be seen on display at the New Mexico Mineral Museum at the New Mexico Bureau of Geology and Mineral Resources (a research and service division of New Mexico Tech).
“Unlike the plant or animal kingdoms, which have millions of known species, the mineral kingdom has far fewer members,” said Senior Mineral Museum Curator Dr. John Rakovan. “Today, there are 5,998 known mineral species, but new minerals are being discovered every year.”
Raydemarkite was named for Ramon S. DeMark, a retired U.S. Navy aviation officer with a bachelor’s degree in geology and a lifelong interest in mineral collecting. For the past 53 years, he has promoted and collected New Mexico minerals. Raydemarkite occurs as sprays of needle- or prism-shaped, colorless crystals.
Virgilluethite was named for Dr. Virgil W. Lueth, emeritus senior mineralogist/economic geologist from the New Mexico Bureau of Geology, who was director of the bureau’s Mineral Museum from 1994 to 2022 and is still active in mineralogy in New Mexico. Virgilluethite occurs in groups of yellow-green crystals with a platy, layered growth habit.
Stunorthropite was named for Dr. Stuart A. Northrop (1904–1994), a professor of geology at the University of New Mexico from 1928 to 1969. He is the author of Minerals of New Mexico, the most comprehensive work on our state’s mineralogy. First published in 1944, it has undergone several major revisions and is currently in its third edition. Stunorthropite is found as milky-white crystals that sometimes replace the yellow mineral sidwillite during formation.
About New Mexico Tech
New Mexico Tech, also known as New Mexico Institute of Mining and Technology, is a STEM university in centrally located Socorro, New Mexico. Ranking high in regional and national standings, this community of scholars and educators is dedicated to research, innovation, and education that will meet the challenges of today and tomorrow. NMT is recognized as a “Hispanic-serving institution” (HSI), with more than 40 percent of its students identifying as Hispanic. New Mexico Tech is accredited by the Higher Learning Commission as a doctoral degree-granting university.