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An Illustrated and Cross-Referenced Glossary of Malacological and Conchological Terms |
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| by Paul S. Mikkelsen | |||
| Term | Definition |
| NACRE | Iridescent layer of shell, sometimes called "MOTHER OF PEARL." A form of shell structure consisting of thin leaves of ARAGONITE lying parallel to the inner surface of the shell and exhibiting a characteristic luster; see also: DECORTICATED; IRIDESCENT; HYPOSTRACUM; ORTHOGONAL. | |
| NACREOUS | Consisting of the character of NACRE; see also: GLAZED; MARGARITACEOUS; PORCELANEOUS; VITREOUS. | |
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