Nickel Deposit Near Gold Hill, Boulder County, Colorado

Geology and Ore Deposits of the Montezuma Quadrangle, Colorado

Direction of Movement of Jasperoidizing Solution: Issue 1222

Geology and Ore Deposits of the Breckenridge Mining District, Colorado

General Geology and Mines of the East Tintic Mining District, Utah and Juab Counties, Utah: Issues 1024-1028

Geology of the Minturn 15-minute Quadrangle, Eagle and Summit Counties, Colorado: Issue 956

Translocation of Silica and Other Elements from Rock Into Equisetum and Three Grasses

Ore Deposits of the Gilman District, Eagle County, Colorado