Quartz after stilbit pseudomorph

A very nice and aesthetic pseudomorph specimen of elongated crystals of stilbite and small spherolites of dolomite, covered and replaced by tiny quartz crystals.

calcite after calcite pseudomorph

A beautiful tumbnail specimen of steep scalenohedrons calcite crystals, covered by several generations of calcite aggregates. In the last stage of crystallization process on the top were developed excellent terminated flat calcite rhombohedron transparent to translucent crystals with yellowish color.

Calcite after calcite pseudomorph coated by lemonite on quartz

An excellent cabinet size specimen of steep calcite scalenohedrons, developed on quartz. Calcite crystals are covered by several generation of calcite aggregates and secondary coated by lemonite. In the end of crystallization process on the top of scalenohedrons were developed clear rhombohedrons with flat habit.

Calcite after calcite pseudomorph coated by limonite on quartz

One very old cabinet size specimen of quartz, covered with steep scalenohedron calcite crystals, build in the alternation of several generations of calcite and quartz very thin ( less than a millimeter) layers. Later on, these scalenohedron crystals were coated by limonite. At the end of crystallization process appear white, flat rhombohedron calcite crystals.