Weekly Arizona journal-miner., 1904-12-14
SUGGESTIONS
 TO PROSPECTORS Formations Where Min
 eral Is Found. An Interesting Letter From Lynx Creek-Treating of Mineral
 and Scenic Effects.

contributes to the good of his fellow
 man, is a benefactor' Should this article give aid to one of these, then
 my purpose has been accomplished.
 One of the essentials in knowledge
 that prospector should possess is a familiarity with geological horizons
 with which his work his especially as- sociated.
 Useful minerals do not always con- | fine themselves to one horizon. There are certain ranges oI rocks which indi- cate their vicinity. There are also limits which are never overpassed ty some useful minerals and experience has shown that some horizons are all ways sterile in ores. 1t is therefore useless to expect to find them in pay ing quantities in certain rocks or be yond them in certain directions.
 Gold often occures where it will not pay to open and work the strata, as also with silver and copper. Thus how essential to know the relations of such barren regions or horizons as the strata are called.
 All rocks may be classified as igne- ous, metamorphic and aqueous. Igfe- ous rocks are such as have been sub jected to sufficient heat to melt the ingredients of the rocks. Volcanic rocks are those which have cooled at or near the surface as lava.
 The color of the rocks also serve as a guide to the searcher of the precious metals. Rocks of the pinkish redish color alternating with rocks of deep bluish tint are generally very favorable to metallic deposits.
 Copper is indicated by greenish blu ish or redtsh stones upon the rocks in the neighborhood of the lode. Gold being always accompanied with iron manifests it's presence in red yellow or brown shades.
 In my own experience here I have found a remarkable presence of iron sulphides and in every instance suffi cient quantities of gold is associated with the iron to enlist ones further research after the gold product. Again rocks which lie more immediately over the granite and which owe their origin to sedimentary condition, have been subject to heat, we would designate as ID etamorphic rocks. It is largely in these rocks that the best paying gold is to be found, more especially in the quartz veins which have intersected these rocks of which this district is abundantly supplied.
 It will we'll pay the mine owner or prospector to study these conditions and give something beyond homeo- pathic study of his holdings. If they be in form and place as above describ- ed.
 In one of my researches last week come upon a very promising level, well up one of the gulches running in to Lynx creek. The owners having tunneling into the noun tain at point where the surface was faulty or "spooney" driving over 100 feet into barren or virgin rock and from present indications lost hope and abandoned their holdings, desiring to get the benefit of my own theory re- garding the presence of mineral in this promising lode acted upon the desire and within one hour at a safe point, uncovered a fine body of copper ere that fully satisfied one for time and labor spent. 1 would not be understood from this that ignorance in the arts of locating mineral is universal. But 1 will venture the assertion that great majority of the holes made in these grand old mountains are made with but one future that will be asso- ciated with them, that is, disfigure- ment of the surface and in part des- troying the semetry of one of Arizona s grandest scenic effects. Nickel.