TABLE XV 
Color etc. 
Structure. 
Association 
Inclu- 
sions . 
Alterations. 
Occurrence. 
Remarks. 
Dark 
In large crys- 
With elae- 
Metallic 
Not rare in 
elaeolite-syenite, 
brown- 
tals in syenite, 
olite, soda- 
particles. 
Phonolite, 
and trachytes. 
dark 
often frayed 
lite, micro- 
green 
at the end. In 
line, and 
/ 3 =over 
minute crys- 
biotite. 
(g) as product 
(g) Very similar to 
r.7. 
tals yellow or 
alteration of 
tremolite, distin- 
dark green in 
contact miner- 
guished by angles 
trachytes and 
al rare in 
of the prisin and 
phonolites. 
granular 
solubility . 
limestones, 
Difficult to distin- 
Colorless 
In fasciculate 
With cal- 
Fluid in- 
which have 
guish from zeolitic 
yellowish 
or radiate 
cite, green 
elusions. 
been the re- 
substances as 
white. 
aggregates. 
augite. 
sult of meta- 
scolezite. 
strong 
granite. 
merphism. 
relief. 
Rarely in 
phonolite etc. 
cleavage 
1=124°. 
Green- 
In large crys 
With 
Poor. 
Yellowish 
Primary 
Distinguished 
brown. 
tals or grains 
orthoclase 
P'luid in- 
fibrous, epi- 
essential in 
from augite by 
/? p=i.62 
I . 0 . rarely 
plagio- 
clusions. 
dote, calcite 
granular and 
prismatic cleavage 
Pleochro- 
in small crys 
clase. 
glass and 
and limonite. 
porphritic 
angle, slight in- 
ism rath- 
tals and mi- 
quartz, bi- 
gas pores. 
Often on the 
eruptives, as 
clination of c : c 
er strong 
croliths II . 0 . 
otite rare- 
Metallic 
surface to 
syenite, diorite 
and strong pleo- 
a= yel- 
Green horn 
ly with 
particles 
magnetite as 
(green) por- 
chroism. Biotite 
lowish 
blende often 
augite and 
and 
augite. Into 
phyrite, ande- 
has not the cleav- 
green or 
fibrous, brown 
olivine. 
apatite 
biotite, chlo- 
site, trachyte 
age and dichroism 
honey 
zonal. Green 
needles. 
rite. 
(brown) . 
in sections uarallel 
yellow. 
hornb. often 
Accessory in 
0 
!6=yel- 
coalesces with 
Occurrence. 
besalt (browm) 
lowish 
augite. 
olivine stone 
brown. 
(c) Rather 
(green) rare. 
C=black 
frequent in 
In crystalline 
or green- 
certain crys- 
slates (green) 
ish brown 
talline slates 
abundant. 
c>b>'a. 
lacking feld- 
Essential in 
With 
Very 
spar as talc- 
amphibolite 
(c) Almost al- 
Light to 
Needles or 
quartz, 
poor. 
mica-and 
slates and 
ways in long col- 
dark 
grains often 
mica. 
chlorite- 
certain gneiss. 
umns not in short 
green. 
fibrous. 
chlorite 
schists and in 
crystals as in ordi- 
pleochro- 
and rutile. 
serpentine. 
nary hornblende. 
ism"' 
(d) As con- 
feebler 
tact mineral in 
C=dark 
With cal- 
limestone. As 
(d) compare 
green. 
In columns 
cite, oli- 
primary (rare- 
wollastonite. 
a=yel- 
and fasiculate 
vine, horn- 
£ C 
ly secondary) 
lowish. 
aggregates. 
blende, 
component in 
and 
slates and 
Colorless 
diallage. 
serpentine. 
