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occurring in tetragonal crystals, usually tabular, and of a bright orange-yellow to red, gray, or brown color; -- also called yellow lead ore.

ron-aluminium group, found in gadolinite and other rare minerals, and extracted as a dark gray powder. Symbol Y. Atomic weight, 89. [Written also ittrium.]

A mineral of a violet-blue color, inclining to gray and white. It is a hydrous fluoride of cerium, yttrium, and calcium.

A horse of a dark color, neither gray nor white, and having no spots. Smart.

eyes and ears are rudimentary, and its fur is soft and brownish, more or less tinged with gray. It constructs extensive burrows.

A South African burrowing mammal (Suricata tetradactyla), allied to the civets. It is grayish brown, with yellowish transverse stripes on the back. Called also suricat.

The west wind; poetically, any soft, gentle breeze. "Soft the zephyr blows." Gray. As gentle As zephyrs blowing below the violet. Shak. Zephyr cloth, a thin kind of cassimere made in Belgium; also, a waterproof fabric of wool. -- Zephyr shawl, a kind of thin, light, embroidered shawl made of worsted and cotton. -- Ze…

A steel-gray metallic mineral, a sulphide of antimony and lead.

A mineral occurring in tetragonal crystals, usually of a brown or gray color. It consists of silica and zirconia. A red variety, used as a gem, is called hyacinth. Colorless, pale-yellow or smoky- brown varieties from Ceylon are called jargon. Zircon syenite, a coarse-grained syenite containing zircon crystals and ofte…

he metals and nonmetals, obtained from the mineral zircon as a dark sooty powder, or as a gray metallic crystalline substance. Symbol Zr. Atomic weight, 90.4.

A grayish or whitish mineral occurring in orthorhombic, prismatic crystals, also in columnar masses. It is a silicate of alumina and lime, and is allied to epidote.