-
Andesine is a
silicate mineral, a
member of the
plagioclase feldspar solid solution series. Its
chemical formula is (Ca, Na)(Al, Si)4O8,
where Ca/(Ca +...
- 2011). "Tibet
Andesine Mines; Part 2". RWH Publishing.
Retrieved 9
November 2014. Huges,
Richard W. (3
November 2010). "Tibet's
Andesine Mines". RWH Publishing...
- plagioclase. A
variety of
labradorite known as
spectrolite is
found in Finland.
Andesine is a
characteristic mineral of
rocks such as
diorite which contain a moderate...
-
widely in
sodium content, from
anorthite to oligoclase, but is
typically andesine, in
which anorthite makes up
about 40 mol% of the plagioclase. The pyroxene...
-
Algodonite Alunite Amblygonite Analcime Anatase Andalusite Chiastolite Andesine Anglesite Anhydrite Annabergite Anorthite Antigorite Bowenite Apatite Apophyllite...
- rock. The
plagioclase is
typically intermediate to
sodic in composition,
andesine to oligoclase.
Quartz is
present in
significant amounts.
Biotite and/or...
-
alleged that
since 2003, the
shopping network has sold a
gemstone called andesine-labradorite,
without disclosing its treatment,
while promising buyers that...
-
albite (0 to 10) NaAlSi3O8
oligoclase (10 to 30) (Na,Ca)(Al,Si)AlSi2O8
andesine (30 to 50)
NaAlSi 3O 8 – CaAl 2Si 2O 8
labradorite (50 to 70) (Ca,Na)Al(Al...
-
phaneritic texture.
Feldspar is
present as
plagioclase (typically
oligoclase or
andesine) with 10% or less pot****ium feldspar.
Quartz is
present at
between 5 and...
- as phenocrysts. The
plagioclase is
usually sodium-rich (oligoclase or
andesine).
Cristobalite and
trydimite are
sometimes present along with the quartz...
