tremolite
透闪石
透闪石
tremolite n 1 :
a white or pale green mineral (
calcium magnesium silicate )
of the amphibole group used as a form of asbestos Tremolite \
Trem "
o *
lite \,
n . [
From Tremola ,
a valley in the Alps ,
where it was discovered .] (
Min .)
A white variety of amphibole ,
or hornblende ,
occurring in long ,
bladelike crystals ,
and coarsely fibrous masses .
[
1913 Webster ]
Amphibole \
Am "
phi *
bole \ ([
a ^]
m "
f [
i ^]*
b [=
o ]
l ),
n . [
Gr .
'
amfi `
bolos doubtful ,
equivocal ,
fr . '
amfiba `
llein to throw round ,
to doubt :
cf .
F .
amphibole .
Ha ["
u ]
y so named the genus from the great variety of color and composition assumed by the mineral .] (
Min .)
A common mineral embracing many varieties varying in color and in composition .
It occurs in monoclinic crystals ;
also massive ,
generally with fibrous or columnar structure .
The color varies from white to gray ,
green ,
brown ,
and black .
It is a silicate of magnesium and calcium ,
with usually aluminium and iron .
Some common varieties are {
tremolite },
{
actinolite }, {
asbestus }, {
edenite }, {
hornblende } (
the last name being also used as a general term for the whole species ).
Amphibole is a constituent of many crystalline rocks ,
as syenite ,
diorite ,
most varieties of trachyte ,
etc .
See {
Hornblende }.
[
1913 Webster ]
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