266 ANALYSES OF ROCKS AND MINERALS, 1880-1908. 
material from an old locality. For details concerning nephrites D to N, see the 
memoir by Clarke and Merrill in Proc. U. 8. Nat. Mus. for 1888. 
K L M. N e) 
S1Od: cc ccisscascnesccevewca secs teseressecas ead casnsascssessae se 58.11 | 55.87 | 56.85 | 57.38 56. 39 
TDN Bos cca tarmiccirsctewisit nen sin se waeSiieeeae weielsjanicideian ac lcumeinmsieiace [ae seen ys | feeeeme|decmeelelteaamads none 
NGO SS. crareisrays cis cidats nis bea reed ainciseras rewind Satie cieme eee 24 2.07 - 88 19 1,63 
Fe203. 5, 44 5.79 4.33 4. 43 1.72 
FeO. 38 38 1.45 1.25 3.70 
MnO trace | trace | trace | trace 26 
INDO ncaa rSicjh non pes dias saayarc ma foie otG Be dl Reordl Deh aloreieieraid alo Dalereiapeinnja Since ndinace seem [ed eatte eiste| Chae scotbiey ieiateteroies 13 
CaO. 12.01 | 12.43 | 13.09) 12.14 7.92 
MEO 8: creche ceamnedenecouciqicatesanseaoaeateatsendae 21.97 | 21.62 | 21.56 | 22.71 24, 63 
AIK CSi upc eussaminsse ecauink Coa e hat oO nIahe Senate .--| undet.} undet.| undet.) undet none 
ae oe Se eee Sis Lamaereinia|seetiescia| ae etmistel eee wore 
BO (AG MOO? s siacce scars esiniais: crea eit aici miciaisieiaievarwraxste: ate aaa mele 3 
Tp chord ee a } 278} 1.38} 1.76} 173) 5 
99.93 | 99.54 99.92 | 99.83 | 100.45 
P. Brown hornblende, Pierrepont, New York. Analysis by T. M. Chatard. 
Q. Hornblende separated from gabbro, east shaft of waterworks extension, Wash- 
ington, D.C. Analysis by R. B. Riggs. 
R. Amphibole from the serpentine of Montville, New Jersey. Analysis by L. G. 
Eakins. 
S. Hornblende separation, gedrite, from south of soapstone quarry, Warwick, 
Massachusetts. Analysis by E. A. Schneider. 
T. Hornblende from amphibolite dike, Palmer Center, Massachusetts. Sp. gr., 
3.220 at 31.5° Analysis by W. F. Hillebrand. 
U. Hornblende from amphibolite bed, same locality and analyst. Sp. gr., 3.217 
at 29°. 
@ Admixed rutile. 
V. Hornblende near barkevikite. Separated from the sodalite syenite of Square 
Butte, Highwood Mountains, Montana. Described by Lindgren in Am. Jour. Sci., 
3d ser., vol. 45, p. 286. Analysis by W. H. Melville. 
W. Amphibole separated from quartz diorite, south of Table Mountain, on ridge 
between Butte and Plumas counties, California. Described by Turner in,17th Ann., 
pt. 1, p. 521. Analysis by William Valentine. Chromium determination by Hille- 
brand. ; 
