Gigantic Feldspar Crystal, with Quartz and one lonely Apatite Crystal - Pakistan

Contributed by: Mark Cole
Date: Apr 14th, 2026
Locality: Shigar Valley, Shigar District, Gilgit-Baltistan, Pakistan (See on Mindat)
Size: 7 x 6 x 10 inches
Weight: 8.19 lb

Description:
This is a giant feldspar crystal (a single crystal) with attached quartz, uranyl activated. The unusual blue fluorescence (SW) is suspected of being uranium activated and is quite bright. The reverse side has a small apatite crystal (lost in the giant feldspar) and a smallish quartz crystal. Over 8 lbs - a huge crystal!

Originally posted by Mark Cole on Nature's Rainbows in 2016.