sedmentary rocks 1
... Deposited grains of rocks and minerals derived intact from source, transported by gravity, water, wind, ice. Organic Shells, shell fragments, bones, reefs, etc. May be transported or precipitated in situ. Inorganic Chemical Chemical precipitates due to precipitation of dissolved constituents. Transp ...
... Deposited grains of rocks and minerals derived intact from source, transported by gravity, water, wind, ice. Organic Shells, shell fragments, bones, reefs, etc. May be transported or precipitated in situ. Inorganic Chemical Chemical precipitates due to precipitation of dissolved constituents. Transp ...
4 - East Kazakhstan gold ore belt
... Famous gold-copper-polymetallic deposits of volcanic type (Ridder-Sokolnoe, Tishinskoe, Zyryanovsk, etc.) formed in Rudny Altai in the rift geodynamic setting of Hercynian orogeny cycle and genetically associated with a group of basaltandesite-rhyolite formations (D1e-D3fr). Ore-controlling faults d ...
... Famous gold-copper-polymetallic deposits of volcanic type (Ridder-Sokolnoe, Tishinskoe, Zyryanovsk, etc.) formed in Rudny Altai in the rift geodynamic setting of Hercynian orogeny cycle and genetically associated with a group of basaltandesite-rhyolite formations (D1e-D3fr). Ore-controlling faults d ...
Gold Platinum Report - El Capitan Precious Metals, Inc.
... Santo Tomas II, Philippines; reserves: 300,000 oz Pt (0.001 oz/t Pt); 1,700,000 oz Pd (.005 oz/t Pd); 19,000,000 oz Au (0.06 oz/t Au) C) SEDIMENT HOSTED 1. Carbonaceous shale hosted Kupferschiefer, Germany-Poland; 1 cm layer: 0.32 oz/t Pt (over 1.5 km strike length), up to 29.4 oz/t Pd, 88.2 oz/t Au ...
... Santo Tomas II, Philippines; reserves: 300,000 oz Pt (0.001 oz/t Pt); 1,700,000 oz Pd (.005 oz/t Pd); 19,000,000 oz Au (0.06 oz/t Au) C) SEDIMENT HOSTED 1. Carbonaceous shale hosted Kupferschiefer, Germany-Poland; 1 cm layer: 0.32 oz/t Pt (over 1.5 km strike length), up to 29.4 oz/t Pd, 88.2 oz/t Au ...
Sediment-hosted Cu deposits
... in suitable rocks should be analysed as they may be sulphides, such as chalcocite. GEOPHYSICAL SIGNATURE: Weak radioactivity in some deposits. OTHER EXPLORATION GUIDES: Deposits often occur near the transition from redbeds to other units which is marked by the distinctive change in colour from red o ...
... in suitable rocks should be analysed as they may be sulphides, such as chalcocite. GEOPHYSICAL SIGNATURE: Weak radioactivity in some deposits. OTHER EXPLORATION GUIDES: Deposits often occur near the transition from redbeds to other units which is marked by the distinctive change in colour from red o ...
VOLCANOGENIC MASSIVE SULPHIDE DEPOSITS OF CUBA
... VMS deposits of Cuba metamorphic complex of marble and biotite schist. The deposits and their host ophiolitic rocks are interpreted to have been tectonically emplaced during the attempted subduction of the Escambray Terrane beneath the Cretaceous volcanic arc. There are three main deposits over a s ...
... VMS deposits of Cuba metamorphic complex of marble and biotite schist. The deposits and their host ophiolitic rocks are interpreted to have been tectonically emplaced during the attempted subduction of the Escambray Terrane beneath the Cretaceous volcanic arc. There are three main deposits over a s ...
Final Exam Topics
... Categories of geological resources, What comprise energy resources, What comprise metallic resources, What comprise non-metallic resources, Athabaska oil sands, Gas hydrates (Page 306) , Why gas hydrates are not reserves, Formation of oil pools, Types of oil and gas traps: anticlinal, traps controll ...
... Categories of geological resources, What comprise energy resources, What comprise metallic resources, What comprise non-metallic resources, Athabaska oil sands, Gas hydrates (Page 306) , Why gas hydrates are not reserves, Formation of oil pools, Types of oil and gas traps: anticlinal, traps controll ...
Quiz 1
... 6. The process of changing a melt composition by progressive removal of crystals of different minerals is called ____________________ ? A. B. C. D. ...
... 6. The process of changing a melt composition by progressive removal of crystals of different minerals is called ____________________ ? A. B. C. D. ...
Orogenic gold deposits
... Tectonic settings. The orogenic gold deposits occupy a consistent spatial and temporal position in their tectonic environment. They formed at convergent plate margins, during deformational processes of the ongoing orogenetic activities. Such activity may have been recorded in an accretionary orogen, ...
... Tectonic settings. The orogenic gold deposits occupy a consistent spatial and temporal position in their tectonic environment. They formed at convergent plate margins, during deformational processes of the ongoing orogenetic activities. Such activity may have been recorded in an accretionary orogen, ...
INTRUSION-RELATED DEPOSITS
... Deposits in which the ore minerals have crystallized directly from a magma. Generally found in mafic or ultramafic igneous rocks, typically layered complexes. Three major deposit types: i) Nickel-Copper Deposits ii) Chromite Deposits iii) Platinum Group Elements Deposits Minor amounts of Cr and PGE ...
... Deposits in which the ore minerals have crystallized directly from a magma. Generally found in mafic or ultramafic igneous rocks, typically layered complexes. Three major deposit types: i) Nickel-Copper Deposits ii) Chromite Deposits iii) Platinum Group Elements Deposits Minor amounts of Cr and PGE ...
Serendipity and a Bit of Sleuthing at Canfield Creek
... its pleasant surprise, Esso found that an 18 m interval in the drillhole contained 0.5% Cu, with visible chalcocite and malachite. Esso collared a follow-up diamond-drill hole beside the Scurry Rainbow hole and intersected an 8.4 m thick Cu-bearing zone at a depth of 74 m. An exploration program ens ...
... its pleasant surprise, Esso found that an 18 m interval in the drillhole contained 0.5% Cu, with visible chalcocite and malachite. Esso collared a follow-up diamond-drill hole beside the Scurry Rainbow hole and intersected an 8.4 m thick Cu-bearing zone at a depth of 74 m. An exploration program ens ...
The area occupies the northeastern portion of the Nuba Mountains
... The lithology belongs to the basement comlex which is generally assigned as being of Precambrian age. The succession includes major lithologies recognized elsewhere in the Nuba Mountains and consisting of the acid gneiss group at the base of the succession followed by a metasedimentary sequence of w ...
... The lithology belongs to the basement comlex which is generally assigned as being of Precambrian age. The succession includes major lithologies recognized elsewhere in the Nuba Mountains and consisting of the acid gneiss group at the base of the succession followed by a metasedimentary sequence of w ...
Nonrenewable Mineral Resources
... How are solid non-fuel mineral resources formed and concentrated? Most of the world’s major metal deposits occur at past or present plate boundaries. Surface processes also play an important role in concentrating nonmetallic minerals and rocks. ...
... How are solid non-fuel mineral resources formed and concentrated? Most of the world’s major metal deposits occur at past or present plate boundaries. Surface processes also play an important role in concentrating nonmetallic minerals and rocks. ...
Relationships between volcanism and hydrothermal activity in the
... (Rudabanyacska and Telkibanya Au-Ag deposits and parts of the Regec caldera), formed mainly by the adularia-bearing low-sulphidation epithermal deposits, are between 13.0 and 12.2 Ma. These systems were developed within andesitic-dacitic volcanic centres with calderas and subvolcanic intrusions. In ...
... (Rudabanyacska and Telkibanya Au-Ag deposits and parts of the Regec caldera), formed mainly by the adularia-bearing low-sulphidation epithermal deposits, are between 13.0 and 12.2 Ma. These systems were developed within andesitic-dacitic volcanic centres with calderas and subvolcanic intrusions. In ...
Geochemical characteristics of granitic rocks underlying ion
... ores are typically low-grades and underlain by fractionated granites characterized by high SiO2 contents, low P2O5 contents, and the occurrence of muscovite and fine-grained fluorite, because the HREE enrichment and LREE depletion are constrained by fractional crystallization of granitic magma. The ...
... ores are typically low-grades and underlain by fractionated granites characterized by high SiO2 contents, low P2O5 contents, and the occurrence of muscovite and fine-grained fluorite, because the HREE enrichment and LREE depletion are constrained by fractional crystallization of granitic magma. The ...
Magmatic Ores
... Uses of Chromite: (Cr/Fe ratio and Mg and Al contents are important; cf. Evans). 1- Source of Cr, necessary for the steel industry 2- Refractory 3- Chemical industries Characteristics of Startiform deposits: Age: Precambrian Tectonic setting: cratonic, rifted continental platforms Great latera ...
... Uses of Chromite: (Cr/Fe ratio and Mg and Al contents are important; cf. Evans). 1- Source of Cr, necessary for the steel industry 2- Refractory 3- Chemical industries Characteristics of Startiform deposits: Age: Precambrian Tectonic setting: cratonic, rifted continental platforms Great latera ...
Middle Paleozoic Mountain Building
... Silurian-Widespread Reef Development (Michigan Basin) Thornton Quarry-typical stromatoporoid/coral-strome reef complex. Many evaporite deposits points to a relatively warm earth at this time. Second Mountain Building phase of the Appalachian Mts.= ACADIAN OROGENY Foreland basin development over rela ...
... Silurian-Widespread Reef Development (Michigan Basin) Thornton Quarry-typical stromatoporoid/coral-strome reef complex. Many evaporite deposits points to a relatively warm earth at this time. Second Mountain Building phase of the Appalachian Mts.= ACADIAN OROGENY Foreland basin development over rela ...
GRANOPHILE METAL DEPOSITS - Department of Natural Resources
... Granophile elements are the last to crystallize, therefore tend to concentrate in the top or roof areas and contact zones of the related intrusions. Mineralization occur as disseminations or pegmatites in the intrusion and as veins and stockworks developed upward or outward from it; a mineral zonati ...
... Granophile elements are the last to crystallize, therefore tend to concentrate in the top or roof areas and contact zones of the related intrusions. Mineralization occur as disseminations or pegmatites in the intrusion and as veins and stockworks developed upward or outward from it; a mineral zonati ...
Nonrenewable Mineral Resources
... How are solid non-fuel mineral resources formed and concentrated? Most of the world’s major metal deposits occur at past or present plate boundaries. Surface processes also play an important role in concentrating nonmetallic minerals and rocks. ...
... How are solid non-fuel mineral resources formed and concentrated? Most of the world’s major metal deposits occur at past or present plate boundaries. Surface processes also play an important role in concentrating nonmetallic minerals and rocks. ...
June - Where Gems are Found
... gems from their primary sites, and they collect in new secondary deposits. Secondary deposits are classed as either eluvial or alluvial depending on their relationship to the original source. Eluvial: When the softer, more easily weathering primary structures simply release the harder and tougher ge ...
... gems from their primary sites, and they collect in new secondary deposits. Secondary deposits are classed as either eluvial or alluvial depending on their relationship to the original source. Eluvial: When the softer, more easily weathering primary structures simply release the harder and tougher ge ...
Fluid evolution within Eastern Rhodopian sedimentary rock
... The low-sulfidation epithermal gold prospects from the Eastern Rhodopes, Bulgaria are dominantly hosted by syndetachment sedimentary rocks of Maastrichtian-Paleocene age. On the basis of the alteration mineralogy and textural relationships, it is concluded that gold may have been deposited as a cons ...
... The low-sulfidation epithermal gold prospects from the Eastern Rhodopes, Bulgaria are dominantly hosted by syndetachment sedimentary rocks of Maastrichtian-Paleocene age. On the basis of the alteration mineralogy and textural relationships, it is concluded that gold may have been deposited as a cons ...
Abstract - Society of Economic Geologists
... The Tethyan Belt hosts some of the largest trona and borate deposits in the world. These deposits are confined to a small area extending from western Anatolia to Serbia, deposited in lacustrine basins from the middle Eocene to middle Miocene. All of the trona deposits in the world, except for the Ka ...
... The Tethyan Belt hosts some of the largest trona and borate deposits in the world. These deposits are confined to a small area extending from western Anatolia to Serbia, deposited in lacustrine basins from the middle Eocene to middle Miocene. All of the trona deposits in the world, except for the Ka ...
Glossary for the Lithosphere
... processes or deposits associated with hot water rocks or processes involving molten rock. in the place where it is found liquids and dissolved materials washed through the ground, usually downwards. the molten and semi-molten layer of the Earth between the core and crust rocks changed by intense hea ...
... processes or deposits associated with hot water rocks or processes involving molten rock. in the place where it is found liquids and dissolved materials washed through the ground, usually downwards. the molten and semi-molten layer of the Earth between the core and crust rocks changed by intense hea ...
Sample
... role of plate tectonics than in the previous edition. This includes the present plate position as well as the specific processes that have been active. Many of Earth's resources were formed in the past, and the movement of plates has now altered their geographic positions on Earth's surface. Further ...
... role of plate tectonics than in the previous edition. This includes the present plate position as well as the specific processes that have been active. Many of Earth's resources were formed in the past, and the movement of plates has now altered their geographic positions on Earth's surface. Further ...
Ore genesis
The various theories of ore genesis explain how the various types of mineral deposits form within the Earth's crust. Ore genesis theories are dependent on the mineral or commodity.Ore genesis theories generally involve three components: source, transport or conduit, and trap. This also applies to the petroleum industry, which was first to use this methodology. Source is required because metal must come from somewhere, and be liberated by some process Transport is required first to move the metal-bearing fluids or solid minerals into the right position, and refers to the act of physically moving the metal, as well as chemical or physical phenomenon which encourage movement Trapping is required to concentrate the metal via some physical, chemical or geological mechanism into a concentration which forms mineable oreThe biggest deposits are formed when the source is large, the transport mechanism is efficient, and the trap is active and ready at the right time.