ETYMOLOGY: It comes from the latin galena that applies to all lead ores.

CRYSTAL SYSTEM: Cubic.

PRINCIPLE OF FORMATION: All.

CLASS MINERAL: Sulphides.

MINERAL ELEMENTS CHEMICAL FORMULA: PbS.

HARDNESS: 2.5 on the Mohs scale.

FIELDS: Russia, Britain, USA, Spain (Jaen).

MINERALOGY: The gallery is formed in hydrothermal veins at the highest levels of the earth's crust, is crystalline or solid form. It is both metamorphic rocks and volcanic sulphide deposits.

MYTHOLOGY: In ancient Egypt galena ground as a basis for kohl, cosmetic powder used for eye protection was used. One of the most important sites in the history of this mineral is in the City of Linares (Jaén) Most wells and facilities are located in the northern part of the city. It was used in the preparation of enamels for ceramic vessels. Galena crystals had an important use in the early stage of radios.

PROPERTIES: It is said that the gallery is a "stone of harmony" brings balance at all levels, the gallery opens the mind, expanding ideas, providing encouragement, peace and overcoming the melancholy.

ZODIAC SIGN: Capricorn.

USES: Collection, as lead ore, lead is used in pipes, it is also the main substance for the production of solder alloys and insulating plates for protection against uranium and other radioactive substances.