Richard H. Jahns

1915

• Gem- and lithium-bearing pegmatites of the Pala district, San Diego County, California
• Beryllium and tungsten deposits of the Iron Mountain district, Sierra and Socorro Counties, New Mexico
• Geologic features of the Connecticut Valley, Massachusetts as related to recent floods
• Geology of southern California
• Geology of the San Dieguito pyrophyllite area
• Geology, mining, and uses of strategic pegmatites
• Late pleistocene and recent deposits in the Connecticut Valley, Massachusetts
• Mica deposits of the Petaca district
• Pegmatite deposits of the White Picacho district, Maricopa and Yavapai Counties, Arizona
• Physical characteristics of commercial sheet muscovite in the southeastern United States
• Possibilities for discovery of additional lead-silver ore in the Palomas Camp area of the Palomas (Hermosa) mining district, Sierra County, New Mexico
• The Pelican area, Palomas (Hermosa) district, Sierra County, New Mexico