page_title: Mixite
hierarchical_section_title: Mixite
caption_attribution_description: English: Mixite Locality: Lavrion (Laurion; Laurium) District, Attikí (Attica; Attika) Prefecture, Greece (Locality at mindat.org) Size: 6.8 x 5.0 x 3.6 cm. Mixite is a rare bismuth copper arsenate, and from Laurium is not in itself rare...but it is often found only as sparse microcrystalline material on large plates, and seldom as concentrated crystal clusters like you see here. This attractive turquoise-colored cluster of mixite crystals is nearly 2 cm, and winds attractively down the matrix. Unusually rich for this locality, but also for mixite from any other place as well. Deutsch: Mixit Fundort: Distrikt Lavrion (Laurion; Laurium), Attikí Prefecture, Griechenland (Fundort bei mindat.org) Größe: 6.8 x 5.0 x 3.6 cm.
context_page_description: Mixite is a rare copper bismuth arsenate mineral with formula: BiCu₆(AsO₄)₃(OH)₆·3. It crystallizes in the hexagonal crystal system typically occurring as radiating acicular prisms and massive encrustations. The color varies from white to various shades of green and blue. It has a Mohs hardness of 3.5 to 4 and a specific gravity of 3.8. It has an uneven fracture and a brilliant to adamantine luster.
  It occurs as a secondary mineral in the oxidized zones of copper deposits. Associated minerals include: bismutite, smaltite, native bismuth, atelestite, erythrite, malachite and barite.
  It was discovered in 1879 near J´achymov, Czech Republic by mine engineer Anton Mixa. Mixite has also been found in Argentina, Australia, Austria, France, Germany, Greece, Hungary, Italy, Japan, Mexico, Namibia, Poland, Spain, Switzerland, the United Kingdom, and the United States.
  Mixite is the namesake member of the mixite mineral group, which has the general chemical formula Cu²⁺₆A(TO₄)₃(OH)₆·3H₂O, where A is a REE, Al, Ca, Pb, or Bi, and T is P or As.
context_section_description: Mixite is a rare copper bismuth arsenate mineral with formula: BiCu₆(AsO₄)₃(OH)₆·3(H₂O). It crystallizes in the hexagonal crystal system typically occurring as radiating acicular prisms and massive encrustations. The color varies from white to various shades of green and blue. It has a Mohs hardness of 3.5 to 4 and a specific gravity of 3.8. It has an uneven fracture and a brilliant to adamantine luster.
  It occurs as a secondary mineral in the oxidized zones of copper deposits. Associated minerals include: bismutite, smaltite, native bismuth, atelestite, erythrite, malachite and barite.
  It was discovered in 1879 near J´achymov, Czech Republic by mine engineer Anton Mixa. Mixite has also been found in Argentina, Australia, Austria, France, Germany, Greece, Hungary, Italy, Japan, Mexico, Namibia, Poland, Spain, Switzerland, the United Kingdom, and the United States.
  Mixite is the namesake member of the mixite mineral group, which has the general chemical formula Cu²⁺₆A(TO₄)₃(OH)₆·3H₂O, where A is a REE, Al, Ca, Pb, or Bi, and T is P or As. In addition to mixite, this mineral group contains the isostructural minerals agardite-(Y), agardite-(Ce), agardite-(Nd), agardite-(La), calciopetersite, goudeyite, petersite-(Ce), petersite-(Y), plumboagardite, and zálesíite.
caption: Turquoise-blue mixite, Laurium, Greece. Size: 6.8 x 5.0 x 3.6 cm.
exif: {}