1. Mineral Resources
2. Online Spatial Data
3. National Mineral Resource Assessment 1998

Mineral assessment tracts in Siskiyou county, California

[Additional scientific data in this geographic area]

PC03: Skarn Cu (18b) (Mesozoic) , covers 42 % of this area

90%	50%	10%	5%	1%
0	0	0	0	1

PC08: Porphyry Cu (17) (Mesozoic) , covers 43 % of this area

90%	50%	10%	5%	1%
0	0	0	1	1

PC10: Massive sulfide, Cyprus (24a) (Jurassic) , covers 18 % of this area

90%	50%	10%	5%	1%
0	3	4	5	6

PC14: Massive sulfide, Sierran kuroko (28a.1) (Jurassic) , covers 35 % of this area

90%	50%	10%	5%	1%
0	3	7	15	20

PC15: Massive sulfide, kuroko (28a) (Devonian) , covers < 0.1 % of this area

90%	50%	10%	5%	1%
0	1	2	2	2

PC20: Epithermal vein, Comstock (25c) (Tertiary) , covers 0.4 % of this area

90%	50%	10%	5%	1%
0	1	3	5	5

PC26: Epithermal vein, quartz-adularia (25c + 25d) (Tertiary) , covers 46 % of this area

90%	50%	10%	5%	1%
0	1	2	2	2

PC27: Epithermal vein, Sado (25d) (Tertiary) , covers 0.1 % of this area

90%	50%	10%	5%	1%
0	2	5	8	8

PC28: Hot-spring Au-Ag (25a) (Tertiary) , covers 47 % of this area

90%	50%	10%	5%	1%
0	1	3	5	7

PC39: Low-sulfide Au-quartz vein (36a) (Mesozoic) , covers < 0.1 % of this area

90%	50%	10%	5%	1%
0	0	0	0	1

PC40: Low-sulfide Au-quartz vein (36a) (Mesozoic) , covers 63 % of this area

90%	50%	10%	5%	1%
2	6	9	12	15