Calcedonic

Cal`ce`don´ic

Webster's Revised Unabridged Dictionary, published 1913 by G. & C. Merriam Co.

References in periodicals archive

Enhydros - consists of quartz or of calcedonic or opaline silica which is deposited from heated waters and in which there are cavities partially filled with water, so that the inclusions of water can be seen within the substance of the transparent quartz or calcedony.

Medieval mineralogy

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