This note describes the mineralogy of a zoned, approximately spherical replacement body, about 16 inches in diameter from the Blue Mountain litchfieldite of Methuen Township, Peterborough County, Ontario. Hewitt (1960) has described the geology of this area. Although the principal rock type of the area is litchfieldite, it is by no means homogeneous (cf. Keith, 1939). Roughly spherical bodies, generally less than 12 inches in diameter, and pods of “secondary” minerals principally cancrinite and “hydronephelite”1 are fairly common, particularly in freshly blasted quarry faces of the litchfieldite. These bodies are easily recognizable by their pink color, distinguishing them from the white litchfieldite.

This content is PDF only. Please click on the PDF icon to access.

First Page Preview

First page PDF preview
You do not currently have access to this article.