Therefore the book's chief appeal for collectors is in the slightly sad pleasure its photo gallery offers in showing us nice, aka "interesting," things now gone, or at least unavailable: specimens of Bingham Canyon apophyllite,
okenite, copper, enargite, chalcopyrite, tetrahedrite, and a few others, such as we almost surely have never seen.
From the Komsomol mine: clusters of green ktenasite microcrystals; acicular tufts of white thaumasite; tabular apophyllite crystals to 5 cm, some of them water-clear or showing growth zones; transparent, rhombohedral crystals of calcite in clusters to 5 cm; white
okenite "puff balls" to 6 mm; attractive clusters of orange stilbite crystals to 6 cm; clusters of attractive pink laumontite to 6 mm; and sharp, lustrous pyrite crystals on pink apophyllite-encrusted matrix to 8 cm across.
These include such minerals as cyanotrichite,
okenite, and some mesolites, whose crystals, if wet, will typically mat down and stick together.
Some specimens identified in the past as
okenite may instead be mordenite.
Currier did likewise with goosecreekite and yugawaralite; he also brought to America quantities of superb specimens of
okenite, and pseudomorphs of prehnite after laumontite.