Minerals identify

Know how to recognize them



Silver is a chemical element with the symbol argentum, derived from the Proto-Indo-European h₂erǵ : "shiny" or "white") and atomic number 47. A soft, white, lustrous transition metal , it exhibits the highest electrical conductivity , thermal conductivity of any metal The metal is found in the Earth's crust in the pure, free elemental form ("native silver"), as an alloy and other metals, and in minerals such as argentite. Most silver is produced as a byproduct of copper , and zinc.

Silver has long been valued as a precious metal. Silver metal is used in many bullion coins , sometimes alongside gold while it is more abundant than gold, it is much less abundant as a native metal Its purity is typically measured on a per-mille basis; a 94%-pure alloy is described as "0.940 fine". As one of the seven metals of antiquity , silver has had an enduring role in most human cultures.

Other than in currency medium (coins), silver is used in solar panels, jewellery, ornaments, high-value tableware and utensils (hence the term "silverware "), in electrical contacts, in specialized mirrors, window coatings, in catalysis of chemical reactions, as a colorant in stained glass and in specialised confectionery. Its compounds are used in photographic film. Dilute solutions of silver nitrate and other silver compounds are used as disinfectants and microbiocides (oligodynamic effect and wound-dressings, catheters , and other medical instruments.


Mohs scale ( mineral hardness )