Greta J Orris (Former Employee)
Science and Products
Filter Total Items: 56
Geochemical data from the departments of Choco and Antioquia, Colombia; Part A, General discussion Geochemical data from the departments of Choco and Antioquia, Colombia; Part A, General discussion
No abstract available.
Authors
G. J. Orris, H.A. Peirce, T.W. Wells
Geochemical data from the departments of Choco and Antioquia, Colombia; Part B, Printout of analytical data Geochemical data from the departments of Choco and Antioquia, Colombia; Part B, Printout of analytical data
No abstract available.
Authors
G. J. Orris, H. A. Pierce, T.W. Wells
Geochemical data from the Departments of Choco and Antioquia, Colombia; Part C, Diskettes with analytical data Geochemical data from the Departments of Choco and Antioquia, Colombia; Part C, Diskettes with analytical data
No abstract available.
Authors
G. J. Orris, H. A. Pierce, Tina W. Wells
Nonfuel mineral resources in the United States-Mexico border region: A progress report on information available from the Center for Inter-American Mineral Resource Investigations (CIMRI) Nonfuel mineral resources in the United States-Mexico border region: A progress report on information available from the Center for Inter-American Mineral Resource Investigations (CIMRI)
The exploitation of minerals has played a significant role in population growth and development of the U.S.Mexico border region. Recent proposed changes in regulations related to mining in the United States and changes in mining and investment regulations in Mexico have led to increased mineral exploration and development in Mexico, especially in the border region. As a preliminary step...
Authors
G. J. Orris, N.J. Page, J. G. Staude, K. S. Bolm, M. M. Carbonaro, Floyd Gray, K. R. Long
Distribution of mineral deposits in the United States - Mexico border region Distribution of mineral deposits in the United States - Mexico border region
No abstract available.
Authors
G. J. Orris, K. S. Bolm, Marguerite Carbonaro, Floyd Gray, K. R. Long, N.J. Page, J.M.G. Staude, Tina Wells
Industrial minerals deposit models; grade and tonnage models Industrial minerals deposit models; grade and tonnage models
No abstract available.
Authors
James D. Bliss
Puerto Rico; industrial mineral mines, prospects, and occurrences in the Mineral Resources Data System (MRDS) Puerto Rico; industrial mineral mines, prospects, and occurrences in the Mineral Resources Data System (MRDS)
No abstract available.
Authors
G. J. Orris, Marguerite Carbonaro, M. S. with contributions by Allen, J. D. Bliss, A.H. Ruiz, Richard Kibbe, M.E. Paidakovich, N.J. Page, H. A. Pierce, J. G. Staude
Some industrial mineral deposit models : descriptive deposit models Some industrial mineral deposit models : descriptive deposit models
No abstract available.
Authors
James D. Bliss
Gold-bearing skarns Gold-bearing skarns
In recent years, a significant proportion of the mining industry's interest has been centered on discovery of gold deposits; this includes discovery of additional deposits where gold occurs in skarn, such as at Fortitude, Nevada, and at Red Dome, Australia. Under the classification of Au-bearing skarns, we have modeled these and similar gold-rich deposits that have a gold grade of at...
Authors
Ted G. Theodore, Greta J. Orris, Jane M. Hammerstrom, James D. Bliss
CHANGES IN GRADE, VOLUME AND CONTAINED GOLD DURING THE MINING LIFE-CYCLE OF GOLD PLACER DEPOSITS. CHANGES IN GRADE, VOLUME AND CONTAINED GOLD DURING THE MINING LIFE-CYCLE OF GOLD PLACER DEPOSITS.
Analysis of gold placer data throughout the world suggests that gold grades and volumes cannot be used to distinguish between most types of gold placers. Only the alluvial plain and fan placers are significantly different among the types of gold placers considered. Gold grades and volumes change when working placers go from small-volume methods to large-volume methods. The odds that a...
Authors
J. D. Bliss, G. J. Orris, W. D. Menzie
Description and grades and tonnages of gold-bearing skarns Description and grades and tonnages of gold-bearing skarns
No abstract available.
Authors
G. J. Orris, J. D. Bliss, J. M. Hammarstrom, T. G. Theodore
Science and Products
Filter Total Items: 56
Geochemical data from the departments of Choco and Antioquia, Colombia; Part A, General discussion Geochemical data from the departments of Choco and Antioquia, Colombia; Part A, General discussion
No abstract available.
Authors
G. J. Orris, H.A. Peirce, T.W. Wells
Geochemical data from the departments of Choco and Antioquia, Colombia; Part B, Printout of analytical data Geochemical data from the departments of Choco and Antioquia, Colombia; Part B, Printout of analytical data
No abstract available.
Authors
G. J. Orris, H. A. Pierce, T.W. Wells
Geochemical data from the Departments of Choco and Antioquia, Colombia; Part C, Diskettes with analytical data Geochemical data from the Departments of Choco and Antioquia, Colombia; Part C, Diskettes with analytical data
No abstract available.
Authors
G. J. Orris, H. A. Pierce, Tina W. Wells
Nonfuel mineral resources in the United States-Mexico border region: A progress report on information available from the Center for Inter-American Mineral Resource Investigations (CIMRI) Nonfuel mineral resources in the United States-Mexico border region: A progress report on information available from the Center for Inter-American Mineral Resource Investigations (CIMRI)
The exploitation of minerals has played a significant role in population growth and development of the U.S.Mexico border region. Recent proposed changes in regulations related to mining in the United States and changes in mining and investment regulations in Mexico have led to increased mineral exploration and development in Mexico, especially in the border region. As a preliminary step...
Authors
G. J. Orris, N.J. Page, J. G. Staude, K. S. Bolm, M. M. Carbonaro, Floyd Gray, K. R. Long
Distribution of mineral deposits in the United States - Mexico border region Distribution of mineral deposits in the United States - Mexico border region
No abstract available.
Authors
G. J. Orris, K. S. Bolm, Marguerite Carbonaro, Floyd Gray, K. R. Long, N.J. Page, J.M.G. Staude, Tina Wells
Industrial minerals deposit models; grade and tonnage models Industrial minerals deposit models; grade and tonnage models
No abstract available.
Authors
James D. Bliss
Puerto Rico; industrial mineral mines, prospects, and occurrences in the Mineral Resources Data System (MRDS) Puerto Rico; industrial mineral mines, prospects, and occurrences in the Mineral Resources Data System (MRDS)
No abstract available.
Authors
G. J. Orris, Marguerite Carbonaro, M. S. with contributions by Allen, J. D. Bliss, A.H. Ruiz, Richard Kibbe, M.E. Paidakovich, N.J. Page, H. A. Pierce, J. G. Staude
Some industrial mineral deposit models : descriptive deposit models Some industrial mineral deposit models : descriptive deposit models
No abstract available.
Authors
James D. Bliss
Gold-bearing skarns Gold-bearing skarns
In recent years, a significant proportion of the mining industry's interest has been centered on discovery of gold deposits; this includes discovery of additional deposits where gold occurs in skarn, such as at Fortitude, Nevada, and at Red Dome, Australia. Under the classification of Au-bearing skarns, we have modeled these and similar gold-rich deposits that have a gold grade of at...
Authors
Ted G. Theodore, Greta J. Orris, Jane M. Hammerstrom, James D. Bliss
CHANGES IN GRADE, VOLUME AND CONTAINED GOLD DURING THE MINING LIFE-CYCLE OF GOLD PLACER DEPOSITS. CHANGES IN GRADE, VOLUME AND CONTAINED GOLD DURING THE MINING LIFE-CYCLE OF GOLD PLACER DEPOSITS.
Analysis of gold placer data throughout the world suggests that gold grades and volumes cannot be used to distinguish between most types of gold placers. Only the alluvial plain and fan placers are significantly different among the types of gold placers considered. Gold grades and volumes change when working placers go from small-volume methods to large-volume methods. The odds that a...
Authors
J. D. Bliss, G. J. Orris, W. D. Menzie
Description and grades and tonnages of gold-bearing skarns Description and grades and tonnages of gold-bearing skarns
No abstract available.
Authors
G. J. Orris, J. D. Bliss, J. M. Hammarstrom, T. G. Theodore