ERYTHRITE
ERYTHRITE Erythrite – Co3(AsO4)2.8H2O – is a rare arsenate, typical of the oxidation zone of Co ores. It is called “cobalt bloom” (“Kobaltblüte” in German) because it forms on primary minerals of Co and As, denouncing the existence of these. It is not a major ore mineral, but it is extremely useful for recognizing these […]
EUDIALYTE
EUDIALYTE Eudialyte – Na15Ca6(Fe2+,Mn2+)3Zr3[Si25O73](O,OH,H2O)3(OH,Cl)2 – is a very rare cyclosilicate, characteristic of some alkaline plutonic igneous rocks. It is marketed as a collector mineral and may constitute a Zr ore. Eudialyte is the main representative of the Eudialyte Group, composed of 46 members. It is not possible to confirm eudialyte macroscopically because several members of […]
EPIDOTE
EPIDOTE Epidote – {Ca2}{Al2Fe}(Si2O7)(SiO4)O(OH) – is a very common sorosilicate, very frequent as an accessory mineral in igneous and metamorphic rocks. It has no industrial use. Epidote is part of the Epidote Group, with clinozoisite and piemontite. Forms a series with clinozoisite. May contain Al, Mn and Mg. There are 22 synonyms for “epidote”. Epidote […]