mineral specimens
rare minerals
mineral dealer
systematic minerals
Black Hills minerals
fine minerals
mineral dealer
Dana minerals
IMA minerals
mineral collections
rock and minerals
gem crystal
Checkout
0 item @ $0.00  
Home | My Cart | Login | Register

Amphibolite altered to Tourmaline

#DL62163
SOLD
Amphibolite from Midnight Owl mine, Yavapai Co., Arizona, United States - DL62163
Amphibolite from Midnight Owl mine, Yavapai Co., Arizona, United States - DL62163

Amphibolite altered to Tourmaline

#DL62163
Availability
Sold
Size
10.5 x 13.5 x 5.5 cm - Cabinet 
Formula
Unavailable
Locality
Midnight Owl mine, Yavapai Co., Arizona, United States
Tagged
pegmatite mineral

Biotite schist in amphibolite is replaced by Schorl tourmaline along foliation planes.

London discusses this process on pages 184-185 in his book "Pegmatites". This specimen is discussed and appears in Fig. 12-6c.

Illustrated in London's book "Pegmatites"

Amphibolite

Data courtesy of Webmineral.

Collection
Dr. David London Collection
Special Info
Illustrated in London's book "Pegmatites"
Mineralpedia
View Amphibolite
On Dakota Matrix
Previously Sold Amphibolite
On Dakota Matrix
Other Available Amphibolite
WebMineral
View Amphibolite
Mindat
View Amphibolite

All photos by Dakota Matrix and are Copyrighted © and may not be used without permission. Copyright © 2025 - Dakota Matrix Minerals, Inc. Privacy | Terms & Conditions | Site Map