HEMIMORPHITE CRYSTAL CLUSTER
An interesting and unique Hemimorphite Crystal Cluster with associated minerals on 3 sides of the matrix. Great crystal formations from a well known mineral location. Very collectible!
Ojuela Mine, Durango, Mexico.
11cm x 6cm x 6cm, 243g.
Hydrated Zinc Silicate Hydroxide: Zn4Si2O7(OH)2H2O.
Hemimorphite was originally named calamine but this name had been used for another mineral and Hemimorphite was proposed and is now in wide spread use. The hemi means half while the morph means shape and thus Hemimorphite is aptly named. Only a few other minerals show Hemimorphic character such as tourmaline, but none show it as well as Hemimorphite. Clusters of Hemimorphite that show well shaped crystals do not always show the Hemimorphic character. Because the crystals of a single specimen tend to grow outward with either the top or the bottom as the overall orientation for that specimen. In order to see the Hemimorphic character either a doubly terminated specimen is necessary or two different clusters with different orientations will be needed.