MINERALS. 30 
PICRALLUMOGENE. 
From near Las Vegas, New Mexico. Analysis by W. F. Hillebrand. 
BO piss ccin cas etsew see cnieac seas eaiennsie sale ene 37.51 2. 
EBT 5 Ob gi evi scia este caveusyctsnscznceysiiorens ees voice mrcreycaor SS 9.71 , 
MNO jpercmisominsais sitie tinpatotadascinieeecetesees 06 43. 
MEO issavciedeccganineeetnceevesneameseaseiea 6.75 — 
100. 
HALOTRICHITE. 
A. From the headwaters of Gila River, Grant County, New Mexico, about 40 mile 
north of Silver City. Analyzed by F. W. Clarke, and described in Bull. 9. 
B. From Alum Creek, New Mexico. Possibly the same locality as A. Analys 
by W. T. Schaller. 
H.0... aid 
TMSONAD NG sin seis ciyecsicr tenes siz cea tcxcosrote aids visichxicratcine sy eraisneteists we eae Retes aisiswle nein Reena oe 250. becicieois 
99.17 | 100.1 
ALUNOGEN. 
A. From headwaters of Gila River, Grant County, New Mexico, about 40 mile 
north of Silver City. Analyzed by F. W. Clarke, and described in Bull. 9. Colo: 
pinkish. 
B. From the calcite spring, Yellowstone Park. Fine, white, silky fibers. Analy 
sis by J. E. Whitfield. 
C. From the Grand Canyon, Yellowstone Park. Analysis by J. E. Whitfield. 
100.13 | 99.80} 100.: 
15619—Bull. 419—10—21 
