Dawsonite in the green river formation of Colorado
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Abstract
Dawsonite NaAl(OH)2C03 is a rare mineral that occurs in relative abundance over hundreds of square miles in the Piceance Creek Basin of northwestern Colorado, as a rock-forming constituent of the oil shales in the green River Formation. In some specimens it makes up 25 percent by weight of the shale. Containing 35 percent of acid-soluble A1203, it has been viewed as a potential ore of aluminum. The dawsonite extends through 700 feet of continuous section of high-grade oil shale (averaging 25 gallons per ton), which may be as much as 1,500 feet in thickness. Its distribution, areally and stratigraphically, is reviewed; methods for its identification, and for its quantitative determination in the oil shale, with special reference to X-ray diffraction procedures are described; and the geochemistry of dawsonite, as it relates to the origin of the mineral, is considered. The scattered literature on dawsonite is briefly summarized. © 1966 Society of Economic Geologists, Inc..
Study Area
| Publication type | Article |
|---|---|
| Publication Subtype | Journal Article |
| Title | Dawsonite in the green river formation of Colorado |
| Series title | Economic Geology |
| DOI | 10.2113/gsecongeo.61.6.1029 |
| Volume | 61 |
| Issue | 6 |
| Year Published | 1966 |
| Language | English |
| Publisher | Elsevier |
| Description | 14 p. |
| First page | 1029 |
| Last page | 1042 |
| Country | United States |
| State | Colorado |
| Other Geospatial | Piceance Creek Basin |
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