• Webster's Revised Unabridged Dictionary
    • n Clinkstone (Min) An igneous rock of feldspathic composition, lamellar in structure, and clinking under the hammer. See Phonolite.
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Century Dictionary and Cyclopedia
    • n clinkstone Same as phonolite.
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Chambers's Twentieth Century Dictionary
    • n Clinkstone a greenish-gray or brownish compact, or very finely crystalline igneous rock, splitting into slabs, which give a metallic clink when struck by a hammer
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Webster's Revised Unabridged Dictionary
Clink, + stone,; -- from its sonorousness.]
Chambers's Twentieth Century Dictionary
A form of Click and Clank.


In literature:

CLINKSTONE, called also phonolite, a felspathic rock of the trap family, usually fissile.
"Principles of Geology" by Charles Lyell
As both trachyte and basalt pass into clinkstone, the rock so called must be very various in composition.
"A Manual of Elementary Geology" by Charles Lyell
Some varieties are slaty, and are frequently mistaken for clinkstone, which they closely resemble.
"Geology" by James Geikie