PROCEEDINGS OF UNITED STATES NATIONAL MUSEUM. 183 
én Maine and their mineral composition—Continued. 
Component minerals. 
Essential. 
Accessory and accidental. 
Structure. , 
a 
ageo 
As regards Ugalde “ite formation. 
texture. Aton 
Coarse.....-. Massive ....| Archawan ... 
ee Ci Ce [ee Goiesacese 
ae filt) SEES Pee | Cy ee O60: 2522284 
ner (Ni eee Indistinetly |....do ..-..-- 
laminated. 
seen GO <<225c. Massive ....|.... G0) .23e22 
Oe eee ee (Cris AST 5 a eee 
5 3 eg ea OGisecsosechsaes Go iwwesei< 
8 -C Cy eee ee DO sassceeoRe Goce c 
Quartz, orthoclase, 
clase, biotite. 
Quartz, orthoclase, 
clase, biotite. 
Quartz, orthoclase, 
clase, biotite. 
Quartz, orthoclase, 
clase, biotite. 
-| Quartz, orthoclase, 
clase, biotite. 
Quartz, orthoclase, 
clase, biotite. 
Quartz, orthoclase, 
clase, biotite. 
Quartz, orthoclase, 
clase, biotite. 
plagio- 
plagio- 
plagio- 
plagio- 
plagio- 
plagio- 
plagio- 
plagio- 
Apatite, magnetite, pyrite. 
Do. 
Do. 
Apatite, sphene, zircon, mag- 
netite. 
Apatite, sphene, zircon, mag- 
netite. 
Apatite, sphene, zircon, mag- 
netite. 
Apatite, sphene, zircon, mag- 
netite. 
the table is from the returns furnished by the special agent of the Census. 
