Albert H Hofstra (Former Employee)
Science and Products
Filter Total Items: 82
Geology and mineral resource potential of the Chattanooga 1° x 2° quadrangle, Tennessee and North Carolina — A preliminary assessment Geology and mineral resource potential of the Chattanooga 1° x 2° quadrangle, Tennessee and North Carolina — A preliminary assessment
No abstract available.
Authors
Sandra H. Clark, Gregory T Spanski, D.G. Hadley, A. H. Hofstra
Reconnaissance stream-sediment geochemistry of Death Valley National Monument, California Reconnaissance stream-sediment geochemistry of Death Valley National Monument, California
No abstract available.
Authors
Albert H. Hofstra, D.L. Fey, J. M. Motooka, B. H. Roushey, Lee-Ann Bradley
Handbook of geochemical data for the Trona 1 degree x 2 degrees Quadrangle; Southern California Mineral Resource Framework and Assessment Project Handbook of geochemical data for the Trona 1 degree x 2 degrees Quadrangle; Southern California Mineral Resource Framework and Assessment Project
No abstract available.
Authors
Albert H. Hofstra
Fluid inclusion gas chemistry as a potential minerals exploration tool: Case studies from Creede, CO, Jerritt Canyon, NV, Coeur d'Alene district, ID and MT, southern Alaska mesothermal veins, and mid-continent MVT's Fluid inclusion gas chemistry as a potential minerals exploration tool: Case studies from Creede, CO, Jerritt Canyon, NV, Coeur d'Alene district, ID and MT, southern Alaska mesothermal veins, and mid-continent MVT's
Recent advances in instrumentation now permit quantitative analysis of gas species from individual fluid inclusions. Fluid inclusion gas data can be applied to minerals exploration empirically to establish chemical (gas composition) signatures of the ore fluids, and conceptually through the development of genetic models of ore formation from a framework of integrated geologic...
Authors
G. P. Landis, A. H. Hofstra
Genesis of sediment-hosted disseminated-gold deposits by fluid mixing and sulfidization: chemical-reaction-path modeling of ore- depositional processes documented in the Jerritt Canyon district, Nevada Genesis of sediment-hosted disseminated-gold deposits by fluid mixing and sulfidization: chemical-reaction-path modeling of ore- depositional processes documented in the Jerritt Canyon district, Nevada
Integrated geologic, geochemical, fluid-inclusion, and stableisotope studies of the gold deposits in the Jerritt Canyon district, Nevada, provide evidence that gold deposition was a consequence of both fluid mixing and sulfidization of host-rock iron. Chemical-reaction-path models of these ore-depositional processes confirm that the combination of fluid mixing, including simultaneous...
Authors
A. H. Hofstra
Origin of late dolomite cement by CO2-saturated deep basin brines: evidence from the Ozark region, central United States Origin of late dolomite cement by CO2-saturated deep basin brines: evidence from the Ozark region, central United States
Studies of fluid inclusions in regionally extensive late dolomite cement (LDC) throughout the Ozark region show that CO2 effervescence was widespread during dolomite precipitation. On the basis of quantitative analyses of inclusion fluids, reaction-path modeling shows that LDC with trace amounts of sulfides can be deposited by effervescence of a CO2-saturated basin brine as it migrates...
Authors
D. L. Leach, G.S. Plumlee, A. H. Hofstra, G. P. Landis, E. L. Rowan, J.G. Viets
Science and Products
Filter Total Items: 82
Geology and mineral resource potential of the Chattanooga 1° x 2° quadrangle, Tennessee and North Carolina — A preliminary assessment Geology and mineral resource potential of the Chattanooga 1° x 2° quadrangle, Tennessee and North Carolina — A preliminary assessment
No abstract available.
Authors
Sandra H. Clark, Gregory T Spanski, D.G. Hadley, A. H. Hofstra
Reconnaissance stream-sediment geochemistry of Death Valley National Monument, California Reconnaissance stream-sediment geochemistry of Death Valley National Monument, California
No abstract available.
Authors
Albert H. Hofstra, D.L. Fey, J. M. Motooka, B. H. Roushey, Lee-Ann Bradley
Handbook of geochemical data for the Trona 1 degree x 2 degrees Quadrangle; Southern California Mineral Resource Framework and Assessment Project Handbook of geochemical data for the Trona 1 degree x 2 degrees Quadrangle; Southern California Mineral Resource Framework and Assessment Project
No abstract available.
Authors
Albert H. Hofstra
Fluid inclusion gas chemistry as a potential minerals exploration tool: Case studies from Creede, CO, Jerritt Canyon, NV, Coeur d'Alene district, ID and MT, southern Alaska mesothermal veins, and mid-continent MVT's Fluid inclusion gas chemistry as a potential minerals exploration tool: Case studies from Creede, CO, Jerritt Canyon, NV, Coeur d'Alene district, ID and MT, southern Alaska mesothermal veins, and mid-continent MVT's
Recent advances in instrumentation now permit quantitative analysis of gas species from individual fluid inclusions. Fluid inclusion gas data can be applied to minerals exploration empirically to establish chemical (gas composition) signatures of the ore fluids, and conceptually through the development of genetic models of ore formation from a framework of integrated geologic...
Authors
G. P. Landis, A. H. Hofstra
Genesis of sediment-hosted disseminated-gold deposits by fluid mixing and sulfidization: chemical-reaction-path modeling of ore- depositional processes documented in the Jerritt Canyon district, Nevada Genesis of sediment-hosted disseminated-gold deposits by fluid mixing and sulfidization: chemical-reaction-path modeling of ore- depositional processes documented in the Jerritt Canyon district, Nevada
Integrated geologic, geochemical, fluid-inclusion, and stableisotope studies of the gold deposits in the Jerritt Canyon district, Nevada, provide evidence that gold deposition was a consequence of both fluid mixing and sulfidization of host-rock iron. Chemical-reaction-path models of these ore-depositional processes confirm that the combination of fluid mixing, including simultaneous...
Authors
A. H. Hofstra
Origin of late dolomite cement by CO2-saturated deep basin brines: evidence from the Ozark region, central United States Origin of late dolomite cement by CO2-saturated deep basin brines: evidence from the Ozark region, central United States
Studies of fluid inclusions in regionally extensive late dolomite cement (LDC) throughout the Ozark region show that CO2 effervescence was widespread during dolomite precipitation. On the basis of quantitative analyses of inclusion fluids, reaction-path modeling shows that LDC with trace amounts of sulfides can be deposited by effervescence of a CO2-saturated basin brine as it migrates...
Authors
D. L. Leach, G.S. Plumlee, A. H. Hofstra, G. P. Landis, E. L. Rowan, J.G. Viets