Description
A specimen of grossular, andradite and calcite from Maroneia, Greece. This piece is especially interesting geochemically because it pairs two different garnet species on a single piece: greenish-yellow grossular growing alongside, and in direct contact with, brown andradite. The two belong to a continuous solid-solution series, in which the aluminum that dominates grossular is gradually replaced by the ferric iron that dominates andradite. Light-blue calcite adds a bold contrast in color to the assemblage. The piece comes from a 2023 discovery that yielded this visually attractive and scientifically fascinating combination of minerals.
LOCATION
Greece, Maroneia
SIZE
2.6 cm
WEIGHT
13 g