Alum schist
() Alt. of Alum shale |
Alum shale
() A variety of shale or clay slate, containing iron pyrites, the decomposition of which leads to the formation of alum, which often effloresces on the rock. |
Calcareo-siliceous
(a.) Consisting of, or containing calcareous and siliceous earths. |
Chert
(n.) An impure, massive, flintlike quartz or hornstone, of a dull color. |
Flinty
(superl.) Consisting of, composed of, abounding in, or resembling, flint |
Radiolarian
(a.) Of or pertaining to the Radiolaria. |
Radiolarian
(n.) One of the Radiolaria. |
Schist
(n.) Any crystalline rock having a foliated structure (see Foliation) and hence admitting of ready division into slabs or slates. The common kinds are mica schist, and hornblendic schist, consisting chiefly of quartz with mica or hornblende and often feldspar. |
Shale
(n.) A shell or husk |
Shale
(n.) A fine-grained sedimentary rock of a thin, laminated, and often friable, structure. |
Shale
(v. t.) To take off the shell or coat of |
Siliceous
(a.) Of or pertaining to silica |
Slate
(v. t.) An argillaceous rock which readily splits into thin plates |
Slate
(v. t.) Any rock or stone having a slaty structure. |
Slate
(v. t.) A prepared piece of such stone. |
Slate
(v. t.) A thin, flat piece, for roofing or covering houses, etc. |
Slate
(v. t.) A tablet for writing upon. |
Slate
(v. t.) An artificial material, resembling slate, and used for the above purposes. |
Slate
(v. t.) A thin plate of any material |
Slate
(v. t.) A list of candidates, prepared for nomination or for election |
Slate
(v. t.) To cover with slate, or with a substance resembling slate |
Slate
(v. t.) To register (as on a slate and subject to revision), for an appointment. |
Slate
(v. t.) To set a dog upon |
Slate-color
() A dark bluish gray color. |
Slate-gray
(a.) Of a dark gray, like slate. |