This link will bring up a Membership Guide and Form which is formatted to print on 8 1/2 x 11, both sides, and can be folded to form a Pamphlet.  It has more information than the form below.

Prospective national members should send their application and $11/year national dues to:
Friends of Mineralogy
Attn. Gloria Staebler, Treasurer
P.O. Box 234
Arvada, CO 80001

Prospective members of a regional chapter should contact or send the form (without dues) to the appropriate chapter officer.  Regional Chapters include Colorado, Midwest, Mississippi Valley, New Jersey, Pacific Northwest, Pennsylvania, and Southern California.

National dues are past due as of April 1. Former members of FM are strongly encouraged to rejoin.