Learn about some of the most common terms used at Peñoles and in the mining and metals industry.

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  • Non-ferrous metals

    Iron-free metals and alloys. In general, they are soft and have little mechanical resistance, so that they are combined with other metals (alloys) to modify their properties.

  • Ore grade

    Concentration of a desired mineral in a potentially mineable ore deposit. It is commonly expressed as a percentage (%), parts per million (ppm) or grams per ton (g/t). For example, a gold grade of 0.27 g/t indicates that for each ton of ore, it is possible to find 0.27 grams of this metal.

  • Ore vein

    Mineral material deposited in rock fissures, cracks or crevices, whose composition is different from the substance in which it is embedded.

  • Polymetallic

    Deposit, ore, rock or mineral in which several metals proliferate and coexist.

  • Porphyry deposit

    Low mineral deposit, characterized by the disseminated occurrence of mineral within a large volume of igneous rock with porphyry texture.

  • Precious metals

    Metals with a high economic value due to factors such as their scarcity, use in industrial processes and their role throughout history as a store value assets. Chemically, precious metals tend to be less reactive than most elements, and they are usually ductile and lustrous.

  • Precipitate

    Solid material derived from a liquid solution by means of precipitation.