There follows the book's longest chapter, "Less Common Species," which offers nearly a hundred pages of short accounts of minerals ranging from adamite and algodonite (a copper arsenide) through weloganite, whewellite, wulfenite, xonotlite, yugawaralite
, zincite, zunyite (and many others even within the sequence WXYZ)--all considered in light of their potentials as ornamental materials.
crystals are not quite the equals of the recent ones from India, but are probably second best in the world: very sharp, transparent and colorless toothy blades to 2 cm sitting up on a white quartzite matrix.
Hori also reported that transparent yugawaralite
crystals up to 1 cm have been found at the Kawazu zeolite location, a coastal outcropping on the Izu peninsula, near Kawazu, Shizoka prefecture.