Categoria: L

LINARITE

LINARITE Linarite – PbCu(SO4)(OH)2 – is a relatively rare sulfate, one of several blue secondary copper minerals. It forms part of oxidized copper, lead, and zinc ores, but is not a major ore mineral. It is classified in the four-member Linarite-Chenite Group. 1. Characteristics Crystal system: Monoclinic prismatic.           Color: Deep, intense […]

LUDWIGITE

LUDWIGITE Ludwigite – Mg2Fe3+(BO3)O2 – is a rare borate, member of the Ludwigite Group, dimorph of magnesiohulsite and the magnesium analogue of Vonsenite and Marinaite. It has two varieties, with Al and with Sn (up to 12.0% w/w). Ludwigite is ferromagnetic and slowly soluble in acids. 1. Characteristics Crystal system: Orthorhombic dipyramidal.         […]

LINNAEITE

LINNAEITE Linnaeite – Co2+Co3+2S4 – is a rare sulfide that occurs in Co and Ni ores. It is classified in the Linnaeite Subgroup. It forms a series with polydymite and another series with siegenite. Common impurities are Ni, Cu, Fe, and Se. It is possible that some Ni-rich reports of this mineral refers to the […]

LÖLLINGITE

LÖLLINGITE Löllingite – FeAs2 – is a relatively rare arsenide, usually found in small quantities in deposits containing arsenic minerals. It does not serve as a primary ore of arsenic, at most acts as a secondary one. It is classified within the Löllingite Group and forms a series with safflorite. It may contain Bi, Sb, […]

LEAD

LEAD Native lead is a fairly rare native element, recorded in just over 200 occurrences worldwide. It has also been recorded on the moon. It is not an ore due to its rarity. It belongs to the Copper Group, along with copper, gold, maldonite (Au2Bi), and silver. When it forms crystals, they are octahedrons, cubes, […]

LUZONITE

LUZONITE Luzonite – Cu3AsS4 – is a rarer sulfide, occurring as a primary mineral in copper ores. It is part of the Stannite Group and contains 48.4% Cu. As impurity, may contain Sb. 1. Characteristics Crystal system: Tetragonal scalenohedral. Color: Deep pinkish-brown Habit: Massive, granular. Crystals very rare and small, equant (pseudo-octahedral) in habit. Cleavage: […]