Arizona republican., 1913-02-23
States


 series of argillaceous rocks beginning ] with clay and passing through shale into slate and phylite is of sedimen- i tary origin This is indicated by the organic remains, false bedding i etc.
 This useful rock is used for many purposes, including roofing for houses. billiard and other tables, ! pencils, chimney pieces, writing slates and insulators used for elcc trical purposes The slate for the last named purpose must be free from iron For pencils the soft var iety is used that retains the bedding cleavage ad breaks into long. slender prisms. Slate is also used in black boards and for structural material It is extensively used in some parts of England in pavements.
 The value of slate is determined by it's cleavabiIity, and the smooth ness of the cleavage surface and by it's strength when it is separated into sheets If false cleaVages are present. that appreciates the value
 States are found in several locaii- ties in Arizona but we desire to call attention to deposits within a reason able distance of Phoenix. In the
 Tonto country there are extensive areas covered by an excellent quality
 of slate of two colors, dark blue
 and light red, or more correctly.
 pinkish. Even on the surface, cleaN-
 age seems perfect but just at present
 these deposits are too far from q
 railroad to be of commercial value.
 On the Kay Copper companys $
 ground there is a black slate Gar
 gillite). which constitutes a copper
 ore and is heavily charged with
 pyrite and chalcopyritc. The near
 est marketable product is from seV-
 en to eight miles north of Phoenix
 and is at an elevation of from 100
 to 200 feet above the city. Some of the locations are owned by Gregg and Christy Adjoining on the north, Vie Hanna and associates and also J. A Porterie own ground. The first mentioned owners started a quarry within a half mile of the Arl- 1 zona canal and have made consider able improvement upon the prop l erty. such as establishing a lime l kiln. digging a well 200 feet deep
 with windmill, slate saw, wire rope 1 cable and a gasoline hoist
 The slates stand nearly vertical | and have d course, northwest and 1 southeast The color is light blue | The slate near the surface is some | what bIocky and has stringers ci quartz in the fractures. But at the bottom of the quarry the slate be comes more fissle and laminated ano is taking on a more perfect cleaV- age character The rock is free Q mineral or it's stain and will un- doubtedlv improve in all it's charac
 ters before much greater depth + reached. This quarry could be eaSll. operated by opening up on the flanl of the hill.
 On the Hanny property the sl&e ! of a very excellent character. Al though little surface work has bee1 done the cleavage of the rock IS per feet and smooth The material cal be easily worked. The color is darI blue with thin bands of green chlor itic slate There are no impurities O iron mineral present and only lttI sericite Cfine micaD. The cropping are visible for over two thousaa feet and in places are from 200 [ 400 feet wide The slate stands al most vertical and is strong in struc ture with fine, even texture. wagon can be driven on the property
 Within such easy accessibility "
 our growing city it certainly seem
 that the time is ripe for the opera , tion of these quarries. Producto would undoubtedly create dema n and for the many purposes that LII material can be used, it seems prou able that capital will be attracted | ] those enterprises and another in ] dustry will be started Tn the Nlclhi' ] of Phoenix.
 ! am given to understand by M ! Porterie that an excellent glaze 1 i face compressed brick is being mad of the slate with other admiXture ] The sample shown me would cef tainIv add a very handsome efte' , to any building Samples of tn slate can be seen by lnquirlhb > any of the above owners.
 None of the work on any ol LII - nroperties has been done to the bes
 advantage. In each instance, !" } stead of blasting out hole the norm alton should have been dt'oOhN" } benching into the hill.
 With the lime and the slate an ! without going into any technical rt ! quirement for it's composition Ine' is a suggestion for good collpliid id ] tion as basis for cement nahulae ] ture There is no reason why ever house in the valley should not roofed with these slates, since sue ] roofing would be indestrucuble' ! say nothing of it's appearance for any or all of these purposes UT slate were used there is practical an inexhaustible supply. The sla' ' produced in the United States
 1911 had q value of $5,72S,O19.
 $ w. Blaisdal, of Portland, Ors { has been examining Tom Jennlng ! proDerty sixteen miles east of Wlcf ! enburg on the Buckhorn slope to ! ward Castle Creek This proper' { was formerly owned by an old Me> $ ican. Borques, who worked the ol hv arrastras. at times having thrt : of them running at once. Since U