-
Amphibole (/ˈæmfəboʊl/ AM-fə-bohl) is a
group of
inosilicate minerals,
forming prism or
needlelike crystals,
composed of
double chain SiO 4 tetrahedra...
- in the
amphibole group was
banned in much of the
Western world by the mid-1980s, and in ****an by 1995. Some
products that
included amphibole types of...
- ****mingtonite (/ˈkʌmɪŋtənaɪt/ KUM-ing-tə-nyte) is a
metamorphic amphibole with the
chemical composition (Mg,Fe2+ ) 2(Mg,Fe2+ ) 5Si 8O 22(OH) 2, magnesium...
-
Amphibolite (/æmˈfɪbəlaɪt/) is a
metamorphic rock that
contains amphibole,
especially hornblende and actinolite, as well as
plagioclase feldspar, but...
-
quartz and
alkali feldspar. Most
granitic rocks also
contain mica or
amphibole minerals,
though a few (known as leucogranites)
contain almost no dark...
-
appearance from the
parallel intergrowth of
quartz crystals and
altered amphibole fibres that have
mostly turned into limonite.
Tiger iron is an altered...
- but the name is used as a
general or
field term, to
refer to a dark
amphibole.
Hornblende minerals are
common in
igneous and
metamorphic rocks. The...
-
Riebeckite is a sodium-rich
member of the
amphibole group of
silicate minerals,
chemical formula Na2(Fe2+3Fe3+2)Si8O22(OH)2. It
forms a
solid solution...
-
southern edge of the range. To the
north of
these are
Ropebreak P****,
Amphibole Peak,
Mount Baker,
Polaris Peak,
Mount Roth.
Mount Justman and Olliver...
-
resorption shape. The
reaction rim
constituted by
amphibole and/or
biotite is
commonly observed. The
amphibole is of high alkali, such as
alkaline hornblende...
