-
Prehnite is an
inosilicate of
calcium and
aluminium with the formula: Ca2Al(AlSi3O10)(OH)2 with
limited Fe3+
substitutes for
aluminium in the structure...
- The
prehnite-pumpellyite
facies is a
metamorphic facies typical of
subseafloor alteration of the
oceanic crust around mid-ocean
ridge spreading centres...
-
quartz The
prehnite-pumpellyite
facies is a
little higher in
pressure and
temperature than the
zeolite facies. It is
named for the
minerals prehnite (a Ca-Al-phyllosilicate)...
-
Piemontite Pietersite Plumbogummite Pollucite Polyhalite Poudretteite Powellite Prehnite Prismatine Prosopite Proustite Psilomelane Pumpellyite Chlorastrolite (var...
-
through the zeolite,
prehnite-pumpellyite, blueschist, and
eclogite facies stability zones of
subducted oceanic crust.
Zeolite and
prehnite-pumpellyite facies...
- of
beryllium Zircon, a
mineral belonging to the
group of
nesosilicates Prehnite, an
inosilicate of
calcium and
aluminium Tourmaline, a
crystalline boron...
- and
diabase and in
serpentinites in ****ociation with zeolites, datolite,
prehnite,
calcite and serpentine. It is
found in a wide
variety of
worldwide locations...
-
initially undergoes low-grade
metamorphism to
metabasalt of the
zeolite and
prehnite-pumpellyite facies, but as the
basalt subducts to
greater depths, it is...
- 7)•(OH) 2H 2O.
Chlorastrolite was once
thought to be an
impure variety of
prehnite or thomsonite.
Chlorastrolite occurs as
amygdaloid structures and fracture...
- 60% 202 168 47 H090L70C60
Catkin Yellow 90° 70% 70% 204 168 0 H090L70C70
Prehnite Yellow 90° 70% 80% 208 167 0 H090L70C80
Light Beige 90° 80% 10% 207 197...
