-
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...
-
through the zeolite,
prehnite-pumpellyite, blueschist, and
eclogite facies stability zones of
subducted oceanic crust.
Zeolite and
prehnite-pumpellyite facies...
-
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)...
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Piemontite Pietersite Plumbogummite Pollucite Polyhalite Poudretteite Powellite Prehnite Prismatine Prosopite Proustite Psilomelane Pumpellyite Chlorastrolite (var...
-
initially undergoes low-grade
metamorphism to
metabasalt of the
zeolite and
prehnite-pumpellyite facies, but as the
basalt subducts to
greater depths, it is...
- and
diabase and in
serpentinites in ****ociation with zeolites, datolite,
prehnite,
calcite and serpentine. It is
found in a wide
variety of
worldwide locations...
- 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...
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Eclogite Blueschist Greenschist Prehnite-
Pumpellyite Zeolite Granulite Amphibolite Hornfels Sanidinite P (kbar) T (°C) 0 100 200 300 400 500 600 700 800...
-
babingtonite with
prehnite, from Qiaojia,
Qiaojia Co., Zhaotong, Yunnan,
China Black babingtonite which covers a
matrix of botryoidal,
green prehnite, and a large...
