The garnet Mineral Group









The common Garnets can be divided into two subgroups:

Group 1: Garnets containing aluminum (Al) as their second

These include Pyrope, Almandine, and Spessartine. ("



Group 2: Garnets containing calcium (Ca) as their first element.

These include Uvarovite, Grossular, and Andradite. ("



The members of each group freely intermingle among one another. For example, the magnesium in

Garnet is not a single mineral, but a group contains closely related, isomorphous minerals that form a series with each other. The Garnet members form intermediary minerals between each member, and may even intergrow within a single crystal. The Garnets vary only slightly in physical properties, and some of the members may be so similar that they are indistinguishable from one another without x-ray analysis.The common Garnets can be divided into two subgroups:: Garnets containing aluminum (Al) as their second element These include, and. (" Pyralspite "): Garnets containing calcium (Ca) as their first element.These include, and. (" Ugrandite ")The members of each group freely intermingle among one another. For example, the magnesium in Pyrope may be partially replace d by some iron from Almandine or by some manganese from Spessartine . However, between the two groups of Garnets, it is much rarer for them to intermingle.