. Appendix to the Journals of the Senate and Assembly of the ... session of the Legislature of the State of California. No. 20, p. 807; Chemistrv of the n. Smith Hoi) D. C Heath Co., : Treatise on Inorcanic W. Mellor, Lonpman Green. 1927, Vol. 7; UUman Enzyrlopatle der TechnlschenCnemie, Vol. 11, Urban & Schwarzenbure, Berlin. :;i4 HKlUKT OF STATK MINKHAL( liEAD-SILVER AND ZINC. The occiuTonce of these metals in Los Anj^eles County is not.•ilmiidaiit. Their principal i)ro(hicti<)n is from the Icad-siiver-zinc(le|)osits of Santa Catalina I
. Appendix to the Journals of the Senate and Assembly of the ... session of the Legislature of the State of California. No. 20, p. 807; Chemistrv of the n. Smith Hoi) D. C Heath Co., : Treatise on Inorcanic W. Mellor, Lonpman Green. 1927, Vol. 7; UUman Enzyrlopatle der TechnlschenCnemie, Vol. 11, Urban & Schwarzenbure, Berlin. :;i4 HKlUKT OF STATK MINKHAL( liEAD-SILVER AND ZINC. The occiuTonce of these metals in Los Anj^eles County is not.•ilmiidaiit. Their principal i)ro(hicti<)n is from the Icad-siiver-zinc(le|)osits of Santa Catalina Island. The niininp: and dcveldpnient of the ores on Catalina Ishnid wasstarted shortly after William Wrijrley, Jr., purchased the island in1919 and sinee that date there has been a steady i)roduetion of thesemetals by the Santa Catalina Island ^Minin^ Company, of Avalon,California. Lead-silver-zine ores oceur in the Silver ^Mountain Mining,District, east of Castae Canon,^ and the San Gabriel Canyon Districtnorth of Tliese metals also occur with the copperores of Pacoima Can von 11. a and Bins. HIack .lack , .Santa Tatalina ^land, California. M ines. lihirk Jack Mine. fLead-Silver-Zinc) It is situated on the north-east slope of lilack Jack Mountain. 2 miles west of Whites Landingand 14 miles by road northwest of Avalon. Santa Catalina 1540 feet. Owner, Santa Catalina Island Company; WilliamWrijrley, Jr., president; I). M. lienton, vice president and {reneralmanaper; David P. Fleminj?, secretary; E. II. Pattison, consultintrengineer. Offices, Avalon, California. The vein occurs in a belt of hornblende .schist that strikes northeastand dips 70 It trends X. :U) W. and di|)s OO E., an<l variesin width from 4 to 2) feet. The vein is mineralized with si»hal(rite,p^alena and pyrite. The panjrue minerals are hornblende, (juartz. barite,calcite and muscovite. The ore-shoot developcil from the surfact to the400-foot le
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