246 ANALYSES OF ROCKS AND MINERALS, 1880-1908. 
WARRENITE.¢ 
New species, described by L. G. Eakins in Am. Jour. Sci., 3d ser., vol. 36, 1888, 
p. 450. From the Domingo mine, Gunnison County, Colorado. Occurs in matted, 
fibrous masses, known locally as ‘‘mineral wool.’’ Analysis by Eakins. 
COSALITE. 
From the Comstock mine, near Parrott City, La Plata County, Colorado. Described 
by W. F. Hillebrand in Bull. 20. 
Ee yes Ranker is aera eenee es SRS 42.93 
8. 43 
-. 7.50 
cigs aoa8 anes stad dyileee -- 22.49 
jad SiS als sea craze sais ateaais sdteytonera wise Shane) Sy peaeza Gh iagh ele eoepeloneiaia sae -teisiaes Zui 26 70 
wid senicweneisermec ordeal eesiidewemGedtmieaemis Secedeus seis eee -. trace 
anisiaiaicieteis ma ctns wince enealsommmgiiaie Pacem oeatm alee cle eeee eaeiecEEueee ca eembeegcceene 17.11 
99. 16 
FREIESLEBENITE. 
‘ 
From Augusta Mountain, Gunnison County, Colorado. Known locally as ‘‘min- 
eral wool.’’ Remarkable for its freedom from silver. Analyzed by L. G. Eakins and 
described by him in Am. Jour. Sci., 3d ser., vol. 36, 1888, p. 452. 
BOURNONITE. 
From Boggs mine, Yavapai County, Arizona. Analysis by W. T. Schaller. 
cigs Ceseeegeaereetemeescekemees se VOY)|| PG sargee eee zisnas os os pe aaite senveecemeeaceares 
20.04 | Zn........ 
DiS | DMM cial cathraseed cic cic Same sreeinaiat ele semmeieises 
18.99 
40. 21 
BEG PER eee eee eae eee RE ees 15. 12 
TETRAHEDRITE. 
From Anchor mine, Park City district, Utah. Analysis by G. Steiger. 
a According to L, J, Spencer, warrenite is identical with jamesonite, In that case it can not be regarded 
as new, 
