ETYMOLOGY: It refers to its chemical composition (Mg).

CRYSTAL SYSTEM: Monoclinic.

PRINCIPLE OF FORMATION: Orthorhombic.

CLASS MINERAL: Hydroxide.

CHEMICAL FORMULA, MINERAL ELEMENTS: Mn3 + O (OH).

HARDNESS: 3-4  on the Mohs scale.

FIELDS: Asturias, Zamora, Salamanca, Cáceres, Murcia, Huelva, Málaga, Germany, Great Britain, USSR, Canada, India, Brazil and Sweden.

MINERALOGY: The hidotermal origin in metalliferous veins at low temperature, also in areas of secondary oxidation of metal deposits, sedimentary and metamorphic rocks sometimes rich in manganese, usually seen in elongated crystals with obtuse terminations and a deep vertical striations .

MYTHOLOGY: In Germany (llfeld) found black crystals drusen 40mm longitud.han discovered large quantities of manganese nodules on the ocean floor in the future will be important to obtain the metal. These nodules containing more than 24% manganese.

PROPERTIES: The Black minerals absorb all light and are thus suitable for extracting energy exedentaria. From the energy point of view the pain arises where a lock and black mineral appears absorb this excess energy, after which the pain disappears and relaxation is established. Mentally removes tensions, black minerals provide security and stability and keeps them from mental deviations and focuses our attention on the essentials.

CHAKRAS: Sacro.

USES: Meditation, collection, high manganese ore.