. The ore deposits of Utah. The relations suggest that in thefibrous chalcedonic mineral the materials thatform the inclusions in the quartz are dissolvedin the silica. The principal metallic mineral of the depositis the red sulphide of arsenic, realgar, which, onexposure to the weather, appears to alter to theyellow sulphide, orpiment. Practically no development work has beendone on the deposit at the time of visit. ANTIMONY DEPOSITS. Antimony is said to occur in at least twolocalities. A prospect a few hundred yardsnortheast of the gold prospect of R. G. Mc-Quarrie consists of a body of stib
. The ore deposits of Utah. The relations suggest that in thefibrous chalcedonic mineral the materials thatform the inclusions in the quartz are dissolvedin the silica. The principal metallic mineral of the depositis the red sulphide of arsenic, realgar, which, onexposure to the weather, appears to alter to theyellow sulphide, orpiment. Practically no development work has beendone on the deposit at the time of visit. ANTIMONY DEPOSITS. Antimony is said to occur in at least twolocalities. A prospect a few hundred yardsnortheast of the gold prospect of R. G. Mc-Quarrie consists of a body of stibnite 6 to 12inches thick, which has been uncovered for adistance of about 6 feet. It appears to be aflat-lying deposit near the contact of limestoneand quartzite, the sandy sediments underlyingand the limestone overlying. Antimony isalso reported from farther northeast. IRON DEPOSITS. The iron deposits in the northern part ofthe district are discussed on page 581. I U. S. GEOLOGICAL SURVEY PROFESSIONAL PAVER 111 PLATE XLIX. I A. SPECIMEN OF NATIVE GOLD IN CARBONATEGANGUE FROM THE BULL VALLEY DISTRICT. U. S. Nat. Mus. No. 88457. Enlarged one-half.
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Keywords: ., bookcentury1900, bookdecade1920, booksubjectminesandmineralresou
