Arizona republican., 1917-01-17
INTERESTING SIDE LIGHTS ON HISTORY OF MAGMA COPPER Engineer Bonsall Recalls Old Prophecy for Magma and Makes Flattering Report on Magma
 Extension

The following Engineers report on the property of the Magma Extension Copper Mining Company is highly interesting. in that it contains refer ence to reports made by Engineer Bousgl years ago on the District of Superior. and also on the property Of the Magma Copper Company. long before operations were commenced by tho prcsen; company At that time Mir. Bonsal reported in the Magma ground. and his prediction that this property would prove famous as q copper producer has been more than 2mplificu by the subsequent develop mcnt and production of the Magma, which tn recent months has not only fulfilled his prediction as proauce- but has become one of the richest and most sensational copper mines in the world
 Though not supported in his find ings at that time by other noted ex- pcris and rcolosists who examlned the district for various interests. Mir Bonsalls confidence in the distrist has peer more than justified by the showing of the Magma, the Grand Pacific. and other producers of the district. and his report now on the Magma Extension will he looked upon with particular interest by the min ing world. He reports az follows: The nineralized zone or belt exteufiE along the base of the lime and fuartzite- Throughout the entire dis trlct ihc general geologic features are similar for twelve or fifteen miles with the mineral occurring In the fault fracture Assures in the porphyry. with inc execution of the Lake Super ioc and Arizona property. where il occurs in the lime in lenses where no doubt it received it's mineral s0lu- ton from the Queen Creek Fault. In my general report made in 1905 of the Superior District. and my specific report of the Magma (then the Qaecn) in 1908. Ctwo years prior t,. commencement Of operations by the i present Magma Copper Company 1 predicted rom the conditions I ob- served on the Queen at that time that the Superior District would become as famoIs for its copper as the Silver King was in it's palmy days for it's silver.
 That inc extensive ore bodies in this i district occur in the porphN.y is an ! established fact from the develop rnent ir the Magma and Silver King | properties 1000 feet depth in the Sil- | yer King. and l506 feet depth in the ! Magma. with their millions of dollars ! of production.
 ! Your prope, ty has exposed the larg 1 est and most attractive belt of DOT phyry in this section that has come i under my observation of some number ! of visits to this particular section fo: 1 several years. There is actually ex- | posed q late intrusive porphyry com i ing up through the diabase roo feel in
 width. being ten times or more grea- ! ter ir width than the surface show l irg of porDhyry on the Magma, with | cross fractures and veins in the por- 1 phvry showing some lead and sul- phides of copper. The porphyry is
 highly mineraliZed and one tunnel driven in the porpayry for 360 feet. and cutting it 150 feet in depth shows
 sulphides of copper and assays in gold.
 There should be some preliminary
 work: continuous sinking of the shaf, on tie Portland claim. which will
 give incidentally, ample water for
 operating and domestic purposes: also
 Soire work should be done near the
 old shaft. which is supposed to have
 been sunk 10 years ago. and I under stand. shipments of ore were made from this shaft which ran approxi- mately S10000 per ton in silver. cop per being worth very little in those days There is some bornite copper | showing there now. A wagon road tC
  connect with the Silver King road can be built about three quarters oi 2 m'e long. and for approximately Ore Thousand Dollars
 In conclusion will state that you nave the basic acdic and organic Formations with an exposed late in-
 trusive porphyry dyke cutting ur through the diabase at least TOO feet wide highly mineralized, with an idea location for a permanent working shaft. with cross fractures and paral- Tel veins in the porphyry, carrying lead. hornites and sUlphides of cop
 per. From the established fact that the ore makes in the porphyry and tn,
 extremely large porphvrv dyke witt it's heavy naturalization, there is
 every reason to believe that youi
 property will prove. by extensive de- velonment. ono of the largest produc-
 CTS in the district
 Respectfully submitted.
 (Signed) F. J. BONSAII., E. NJ. , Advertisement Ii