The Krystal andalusite-garnet occurrence is located 1 kilometre from the eastern shore of Kitsumkalum Lake, approximately 800 metres north of Maroon Creek.

The area is underlain by metavolcanic and metasedimentary rocks of the Upper Jurassic Bowser Lake Group. The volcanic rocks consist of dacitic crystal tuffs, andesites and basalts, which are metamorphosed to muscovite schists, biotite-chlorite schists, and gneisses. The units strike east, dip 25 to 35 degrees north and have undergone varying degrees of sericite, epidote and chlorite alteration.

Locally, andalusite and garnet occurs in a mica schist of the Bowser Lake Group sediments where they come in contact with a metamorphosed zone.

The andalusite crystals range in size from 0.6 to 2.5 centimetres in size and garnets range in colour from yellow to red.