PROCEEDINGS OF UNITED STATES NATIONAL MUSEUM. 179 
in Maine, and their mineral composition. 
EE SSS 
Structure. 
Gea 
age o 
As regards on kone formation. 
texture. ont 
Coarse ....... Massive ...-}| Archean .. 
- CURR) Bee Gener eee | acre GO: ssaskes 
PENG eecsaeniss| os: do 22222 F4|- =<: dot. s225 32 
oi eae dO saene-- Devonian. -- 
Bee OO coca -|--5 GOON Bee 0:25 <ac- 
ORTSOs-=-5--|- 2. Gy eee Archean .. 
- 81 EASE ee dota. eas dOheeenane 
~2o (Ba eae eee SOs cates: 
- SO SSS) ee d0)s=2=-- FedOisssccne 
ReeeUOy 2 ko -.5< Indistinctly |..-.do ....-.- 
laminated. 
er eee Indistinctly |.--.do ....-.. 
laminated. 
paa200.222-5-< INMFGSRSIVO\s <2 |=. G0ccasa5e 
GR ee ee GGies 2 <= ee AO adaes ee 
eG Eee oe ee GO ees 24| =~ AGS scccHs 
_ AEG oe eee OG) 5 soso s\s—200.o26-25~ 
Porphyritic-.|---. iS Feeoee EBL Cee esas 
- A oer (eee 25200) Sonkece 
Pee OOhac5= 5 = Pee Seer, 2 ee00 seen 
SeeiG -s2e-c|--.-d0 .-..-.- fee Gs sad 
Coarse ....... Indistinetly |.--.do .....-. 
laminated. 
AAG See Indistinctly |---.do ....... 
laminated. 
Seen O iaiana arm Indistinctly |----do -....-- 
laminated. | 
See OO enn Indistinctly |.--.do ....... 
laminated. 
Coarse and | Massive ....|----do ...---- 
ike is 
phyritic. 
J Se GOAscalsc eee eOO'S 2 nas 
BDINIG ems 5iace-< <= MOVs Sean pspcOO'sscasee 
iG eS Eee GO. cmc s% Se i ( tae 
Moarse.......|- = Oneen so ae Ol ceaets 
See ee eas Indistinetly |..--do ....... 
laminated. 
yoehac Indistinctly |..--.do ......- 
laminated. 
A ioduiss Indistinctly |.--.do -....--. 
laminated. 
Massive ....| Mesozoic.... 
aay laminated. 
-| Indistinetly |.-..do ....... 
laminated. 
Component minerals. 
Essential. 
Quartz, orthoclase, 
clase, biotite. 
Quartz, orthoclase, 
clase, biotite. 
Plagioclase, augite, 
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. 
Quartz, orthoclase, 
clase, hornblende. 
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. 
Quartz, orthoclase, 
clase, biotite. 
Quartz, orthoclase, 
clase, biotite. 
plagio- 
plagio- 
plagio- 
plagio- 
plagio- 
plagio- 
plagio- 
plagio- 
plagio- 
plagio- 
plagio- 
plagio- 
plagio- 
plagio- 
plagio- 
plagio- 
plagio- 
Quartz, orthoclase, 
clase, biotite. 
Quartz, orthoclase, 
clase, biotite. 
plaglo- 
plagio- 
Quartz, orthoclase, plagio- 
clase, muscovite, biotite. 
Quartz, orthoclase, plagio- 
clase, hornblende, biotite. 
Quartz, orthoclase, plagio- 
clase, biotite. 
Quartz, orthoclase, plagio- 
clase, biotite. 
Quartz, orthoclase, plagio- 
clase, biotite. 
Plagioclase, augite, olivine. 
Indistinctly | Archwan....| Quartz, orthoclase, plagio- 
clase, biotite. 
Quartz, orthoclase, plagio- 
clase, biotite. 
olivene- 
plagio- 
plagio- | 
| 
Accessory and accidental. 
Magnetite, zircon. 
Apatite, zircon, epidote, 
sphene, magnetite, chlo- 
rite. 
Chlorite, magnetite, apatite, 
titanic iron. 
Hornblende, biotite, apatite, 
magnetite, titanic iron, 
chlorite. 
Hornblende, biotite, apatite, 
magnetite, titanic iron, 
serpentine chlorite. 
Sphene, epidote, zircon, mag- 
netite. 
Magnetite, zircon. 
Apatite, magnetite. 
Do. 
Epidote, magnetite, zircon, 
apatite. 
Magnetite, zircon, chlorite, 
sphene, orthite. 
Epidote, zircon, magnetite, 
chlorite. 
Magnetite, zircon, chlorite, 
sphene, orthite. ‘ 
Muscovite, apatite, zircon, 
magnetite, chlorite. 
Muscovite, apatite, zircon, 
magnetite. 
Muscovite, apatite, garnet, 
magnetite. 
Muscovite, apatite, garnet, 
magnetite. 
Muscovite, apatite, garnet, 
magnetite, epidote,sphene. 
Muscovite, apatite, garnet, 
magnetite, epidote,sphene. 
Muscovite, apatite, magnet- 
ite, epidote, sphene. 
Muscovite, apatite, magnet- 
ite, epidote, sphene. 
Microcline, magnetite, apa- 
tite, pyrite, zircon, sphene, 
orthite. 
Microcline, apatite, magnet- 
ite, epidote. 
Microcline, apatite, magnet- 
ite, epidote, hematite 
scales, orthite, zircon. 
Microcline, apatite, magnet- 
ite, zircon, 
Sphene, magnetite, apatite, 
zircon, pyrite. 
Apatite, magnetite, zircon. 
Apatite, magnetite. 
Hornblende, apatite, mag- 
netite, zircon. 
Magnetite, 
hornblende, 
tanic iron. 
Magnetite, apatite. 
Do. 
black mica, 
apatite,  ti- 
