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n.1.(Min.) A translucent mineral of a green color and pearly or vitreous luster. It is a hydrous arseniate of copper.
Webster's Revised Unabridged Dictionary, published 1913 by G. & C. Merriam Co.
References in periodicals archive ?
CCW minerals specialist Bob Matthews said: ``Although diamonds do not occur naturally here in Wales we have a whole host of other unusual minerals from economic treasures such as Welsh gold, to world rarities like ramsbeckite and tyrolite.`` Some of the highlights include: Parys Mountain,on Anglesey, was once the world's largest copper mine and contains a wide range of minerals including pyrite, galena and the rare anglesite.
A spokesman for the CCW said, 'Although diamonds do not occur naturally here in Wales there are economic treasures such as Welsh Gold and world rarities such as Ramsbeckite and Tyrolite.
Small concretions or pseudomorphs of pale blue chrysocolla after tyrolite were common at the La Atalaya prospect.
Tyrolite [[CaCu.sup.2+].sub.5][([AsO.sub.4]).sub.2]([CO.sub.3])[(OH).sub.4]*6[ H.sub.2]O
On the 150-foot level in as fine-grained coatings on cavity walls in quartz veins; associated with connelite, tyrolite and azurite.
Juanitaite occurs at one occurrence as square crystal plates with rounded corners in sheaflike subparallel aggregates and rosettes associated with conichalcite and mixite, scattered over fracture surfaces on limonitic matrix, and in another occurrence with connellite, tyrolite and azurite on quartz.