526 WILBUR G. FOYE 
Diorites outcrop on Leandro Hill, and coarse-grained types with 
large hornblende crystals occur in the valley southwest of this hill. 
Medium-grained gabbros rich in labradorite, which gives them a 
greasy, brown appearance, are found on Frijole Hill. 
Along Cow Creek and the adjacent creek on the west, Leandro, 
a series of metamorphic rocks largely derived from tonalites or 
diorites is found. Pegmatitic facies of the tonalite composed of 
quartz, orthoclase, and black tourmaline are common in the valley 
3 MILES 
co: EDEN HILL 
Levi 
HILWPE HILL 
LEANDRO HILL 
€ Witt MICOS 
») LAGOON 
Fic. 1.—Map of vicinity of Micos Lagoon, Northwest of Tela, Honduras 
near locality (1) (Fig. 1). At locality (2) a dioritic orthogneiss 
outcrops. The rock is dark gray in color and is composed of sheared 
oligoclase feldspar in parallel bands with quartz veinlets. Parallel 
fine needles of hornblende add to the banded effect and bend about 
occasional phenocrysts of feldspar. An epidote orthogneiss occurs 
near locality (3). It is composed of epidote, hornblende, and 
labradorite and is banded gray and black in color. A greasy mica 
schist outcrops at locality (4). The paper-thin, crenulated bands 
of muscovite bend about brecciated crystals of oligoclase which 
appear as small ‘‘augen”’ inclusions on the cross-fractured rock. 
On El Eden Hill, locality (5), hornblendite outcrops north of a 
ridge of quartzite which is tilted on end. The hornblendites were 
