Iridescent Goethite (Turgite) from Mexico DS1443 brazil lemurian The formation of dendritic opal

The formation of dendritic opal involves the infiltration of mineral-rich water into rock cavities

Acrylic mineral stands can be purchased separately in a variety of sizes

Composed of silicon dioxide

and their shells became preserved in sedimentary rock formations

Weight: 71 grams

Iridescent Goethite (Turgite) from Mexico DS1443 brazil lemurian The formation of dendritic opalIridescent Goethite (Turgite) from Mexico Approx. Dimensions: 4x2x1 inches Approx. Weight: 77 grams Locality: Durango, Mexico Turgite from Durango, Mexico is an attractive iron oxide mineral specimen most often found at the historic Ojuela Mine in Mapim, Durango, Mexico. It isnt a distinct mineral species in its own right but is generally described as an iridescent mixture of hematite (Fe? O?) and goethite (FeOOH) formed by alteration of iron