Interesting enough Pedro Zarilla Grijalva full name Pedro Zarilla Grijalva Parata.
Some times we have in records was refereed to as Pete. And in the newspapers. There is discrepancy on the his death two dates 1910 and 1916. I suspect the correct date was 1916.
His badly weathered head stone below is recorded as Pedro Zarilla Grijalva Parata. in a cemetery in Wickenburg.
Pedro was married twice first wife died in 1895 and remarried in 1897. He had many children son and daughters.
IN 1900 census he was listed as a miner. below.
What we can gather he still had contoll of the mine by then.
The Grijalva Gold Mine is located in the Black Rock-Blue Tank Mining District near Wickenburg, Arizona. This region is now designated as part of the Hassayampa River Canyon Wilderness.
The mine was initially discovered in 1895 by Pedro Zarilla, also known as Grijalva. Although currently closed with no plans for reopening, the Grijalva Gold Mine was operational from 1908 to 1936.
It was considered a small-scale production mine during its active years. The mining operations primarily involved underground workings, with a single known shaft. The mine reached a maximum subsurface depth of 46 meters (150 feet) and had a total length of 244 meters (800 feet). The ore body at the Grijalva Gold Mine is described as tabular in shape, measuring 97 meters (320 feet) in length, 45 meters (150 feet) in width, and 1 meter (6 feet) in thickness.
Gneiss, a type of metamorphic rock, is prevalent in the host rock formations in this area. The surrounding area is characterized by the Mexican Highland of the Intermontane Plateaus, which contributes to the geomorphology of the region. Pedro only worked the outcrop on surface.
By 1905 Pedro no longer owned the mine. There was four later owners. A man called Beale 1905 took over then a company was formed the Grijalva Nueva Mining Company. Who drove tunnels and addicts between 1905 and 1932 Kahor & Company. The mine was always a small time operation. finally in Roy Marks took over working tailings and alluvial deposits.
The mine operations inside the tunnels was well and truly ceased by the 1930. A collapse created a glory hole in the upper workings.
The ore body Length: Width: 45.72 meters (150.00 feet) Bottom Depth: 45.72 meters (150.00 feet) Thickness: 1.83 meters (6.00 feet) Strike: north 20 east Dip: near vertical.
To day its part of an active lease as of 2020. own by Laura and David Lamb yet it seems the owner of mining lease has no interest in the old mine workings are more content to potter around picking over the tailings.
Surprisingly the new shaft was never completed as it is possible if they excavated deeper the two near vertical of gold bearing ore described as columns of broad flat slabs, would intersect converging on each other. For that to happen the upper tailing pile of mine waste needs to be moved. and various other safety issues need to addressed with glory hole that has collapsed into number and number 2 tunnel.
Sadly some of things needed to be done is out of the scope of week end hobbyist.
Crow