description Grandite Overview
Grandite is a name used for garnet compositions in the solid-solution series between grossular and andradite. Its chemical character therefore varies between calcium-aluminium garnet and calcium-iron garnet, rather than representing a single fixed mineral composition. Grandite material can range in color from pale green and yellow to brown and other intermediate shades. Transparent or translucent specimens may be cut as gemstones, while other examples are collected as mineral specimens.
help Grandite FAQ
What does the name grandite mean?
Grandite describes garnets in the solid-solution series between grossular and andradite. It is a compositional term rather than the name of one fixed mineral formula.
How does grandite differ from grossular?
Grossular is the calcium-aluminium end member of the series, while grandite includes compositions with increasing iron toward andradite. Natural specimens can therefore show mixed chemical character.
What colors can grandite garnets have?
Their color depends on composition and impurities. Green, yellow, brown, and reddish tones are possible across the grossular-andradite range.
Is grandite the same as andradite?
No. Andradite is the calcium-iron end member, while grandite refers to intermediate compositions between andradite and grossular.
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