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

Mineral assessment tracts in Ventura county, California

[Additional scientific data in this geographic area]

PC08: Porphyry Cu (17) (Mesozoic) , covers 31 % of this area

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

PC34: Hot-spring Au-Ag (25a) (Tertiary) , covers 7 % of this area

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

PC40: Low-sulfide Au-quartz vein (36a) (Mesozoic) , covers 17 % of this area

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

SB06: Porphyry Cu (17) (Mesozoic - Tertiary) , covers < 0.1 % of this area

90%	50%	10%	5%	1%
0	0	0	2	3