438 SMITH AND EDDINGFIELD. 



EPIDOTE (HCa2(Al.Fe)3Si30i3). 



A yellowish to pistachio-green mineral, occurring as does olivine. 



CINNABAR (HgoS). 



This mineral has been found in two places in the quartz veins on the head- 

 waters of Major Creek and Batwaan Creek. It occurs in very small, almost 

 minute, bright red crystals which are left in the concentrates in the gold pan. 

 When examined with a magnifying glass the rhombohedra.l crystals can be 

 distinguished. 



SILVER (Ag). 



We have never seen any free silver from this district, although there is an 

 appreciable amount alloyed with the gold. 



TBLLURIDBS. 



Undoubtedly some of the tellurides exist in these ores, although we have not 

 been able to isolate sufficiently large fragments to determine what telluride is 

 present. The wet test for tellurium has been obtained twice and many samples 

 of ore on roasting show the gold "sweated out." We have found such samples 

 only on the Kelley property, coming from small pockets. 



GOLD (Au). 



The gold in this region usually occurs as microscopic particles disseminated 

 through the quartz and pyrite. Occasionally, specimens with visible gold are 

 found, but they are rare. The largest piece we have seen from the district was 

 found on the ridge on the western side of the Antamok River on the ISIadison 

 property. It consisted of thin plates or scales of gold in a quartz stringer. 

 The gold wherever found in this district, is much lighter in color than usually 

 is the case. This is due to the alloy with more or less silver. (W. D. S. ) 



HOT SPRINGS. 



Only a few hot springs are located in the part of the district under discussiou 

 in the present paper, and one. of these is a little south of the lower limit of the 

 map. 



The Itogon hot spring (see large map) is situated on the south bank of the 

 Batwaan, on a bench a few feet above the water: It has deposited a considerable 

 quantity of travertine around the vent. The water is boiling hot. This spring 

 is on the strike of a small vein which has calcite for a gangue. Pannings of 

 this calcite gave "colors." Analysis of this water can not be given at this time, 

 as the only sample collected was lost. 



KLONDIKE HOT SPBING. 



A hot sulphur spring issues from a small fissure in the conglomerate formation, 

 about 3 kilometers above Camp One on the Benguet Road and on the west bank 

 of the Bued River. An analysis is as follows:" 



' Analysis by V. Q. Gana, laboratory of physical and inorganic chemistry, Bureau 

 of Science. 



