Amblygonite

specimen number:
2062999

location:
Montebras, Soumans, Aubusson, Creuse, Nouvelle-Aquitaine, France

description:
A colorless massive example of amblygonite from this classic French locality. The specimen comes with a previous label from the collection of Ray DeMark.

The geology of Montebras, located near Soumans and Aubusson in the Creuse department of Nouvelle-Aquitaine, France, is defined by a prominent granitic pegmatite cupola that intrudes the surrounding regional metamorphic rocks. This complex pegmatitic formation is famous for housing large masses of phosphate minerals, most notably primary amblygonite and its closely related end-member montebrasite, which is named directly after this type locality. Historically, the site gained economic and mineralogical importance during the late nineteenth and early twentieth centuries when mining operations targeted these lithium-bearing phosphate deposits for industrial and chemical applications.

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