- Drachenfels, Germany. The lower-temperature
polymorph of KAlSi3O8 is microcline.
Adularia is a low
temperature form of
either microcline or
orthoclase originally...
- Sanidine, the high-temperature form of pot****ium
feldspar (K,Na)(Si,Al)4O8
Adularia, a more
ordered low-temperature
variety of
orthoclase or
partially disordered...
- stars. The most
common moonstone is of the
orthoclase feldspar mineral adularia,
named for an
early mining site near Mt.
Adular in Switzerland, now the...
- or blue
lusters are produced. This
effect is most
typically produced by
adularia, a K-feldspar or
orthoclase (KAlSi3O8), from
which the name is derived...
- at Dalnegorsk,
Russia Chloritized bladed crystals of
axinite forming on
adularia from the
Swiss Alps
Tinzenite on calcite, 4.5 × 3.5 × 3 cm.
Wessels Mine...
-
Anorthite Anorthoclase Amazonite Bytownite Celsian Microcline Moonstone Adularia (var.)
Rainbow (var.)
Orthoclase Unakite Plagioclase Albite Labradorite...
- of long
prismatic habit in
cavities in
epidote schist, with asbestos,
adularia, calcite, and apatite; the Ala
valley and
Traversella in Piedmont; Arendal...
- of
calcite and
epidote Bright green,
twinned crystal of
titanite with
adularia and
minor clinochlore on
matrix Olive-green
titanite spear point set in...
-
Crystal of
titanite with
adularia and
minor clinochlore on matrix...
- High-grade (bonanza) gold ore,
brecciated quartz-
adularia rhyolite.
Field of view ~10.5 cm across.
Native gold (Au)
occurs in this rock as
colloform bands...
