Cassiterite Crystals on Cleavelandite Matrix mica Heulandite was named in 1822

Heulandite was named in 1822 after John Henry Heuland

Size: 90 x 52 x 33 mm

Clear quartz crystal with dark green epidote crystals near the base of the crystal and several intricate crystal imprints

The calcite is fluorescent with 365nm long wave UV

Cassiterite Crystals on Cleavelandite Matrix mica Heulandite was named in 1822Beautiful cassiterite crystals on a matrix of cleavelandite albite. Cassiterite is a tin oxide mineral that is often found in association with cleavelandite, a platy variety of albite. Cleavelandite is a common constituent of pegmatites, where it forms warped masses of mineral with lamellae parallel to (010) and may be twinned on the albite law. Cassiterite crystals on cleavelandite are rare and highly sought after by mineral collectors. They exhibit