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Precipitated hydrothermal minerals.
A vein is a deposit of minerals found within a rock fracture that are not part of the host rock. A hydrothermal vein is a vein which is filled with minerals that contain large amounts of water. This water is chemically bound water, meaning that it is part of the chemical formula for that mineral.
Hydrothermal alteration.
A waxy luster gives minerals a shiny appearance.
A hydrothermal solution must contain dissolved earth minerals (which can include precious metals) to be considered as such. The hot water must be a brine solution in order to pick up minerals because pure water is a poor solvent of earth minerals.
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Precipitated hydrothermal minerals.
hydrothermal area and earth
most rocks are a mixture of minerals
Hydrothermal springs / hydrothermal water.
A vein is a deposit of minerals found within a rock fracture that are not part of the host rock. A hydrothermal vein is a vein which is filled with minerals that contain large amounts of water. This water is chemically bound water, meaning that it is part of the chemical formula for that mineral.