Common examples include: pyrophyllite, aragonite, wavellite, “pyrite suns” Read more.

Common examples include: calcite, chrysocolla, goethite, malachite Read more.

Common examples include: gypsum, baryte, calcite Read more.

Common examples include: cerussite Read more.

Common examples include: atacamite, stibnite Read more.

Common examples: aurichalcite, boulangerite, mottramite Read more.

Common examples include: wulfenite Read more.

Common examples include: bauxite, gibbsite Read more.

Common examples include: aragonite, calcite Read more.

Common examples include: halite, calcite, synthetic bismuth A hopper crystal is a form of crystal, the shape of which resembles that of a pyramidal hopper container. The edges of hopper crystals are fully developed, but the interior… Read more.