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SYNOPSIS A glossary of Scottish mineral species, listing some 443 mineral names, and containing 399 valid species has been Compiled to fulfil a long recognized need. Wherever possible x-ray diffraction and chemical data have been used in the selection of the species. Entries for the glossary have been derived from an extensive literature survey, examination of many specimens from various museums and from data provided by individuals. The value of museum collections in works of this nature is highlighted, for without them coverage would be inadequate. Modern nomenclature in reference works is used as a yardstick for species status, but in some instances personal decisions had to be taken regarding the status of certain minerals. The mineral lists of Heddle have been revised and are now accredited with 162 valid species; this forms the nucleus of the glossary. Entries follow a standard sequence of name, ideal formula, crystal system, assemblage and locality details, except for Heddle entries. The first, or earliest found, reference is given for minerals discovered after 1901. Some minerals well entrenched in the literature are unsubstantiated. The glossary is accompanied by a text and three appendices, viz, minerals grouped anionically; mineral groups; and minerals which were discovered first in Scotland. Some 15 per cent of the species listed in this glossary have not been recorded previously for the United Kingdom.

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