amygdaloid
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Amygdaloid
Amygdaloid, derived from the ancient Greek for almond, can refer to:

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Mandelstein
Mandelstein (Amygdaloid) ist eine Strukturform verschiedener vulkanischer Gesteine, deren ursprüngliche Hohlräume (Blasenräume) gänzlich oder doch zum Teil durch später gebildete Mineralien (QuarzOpalKalkspatZeolithe, auch Grünerde, allein oder die ausfüllenden Mineralien gegen das Gestein abgrenzend) ausgefüllt sind.

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AMYGDALOID
AMIGDALOIDE. ROCCIA AMIGDALOIDE

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amygdaloid

amygdaloid
\a*myg"da*loid\ (&?;), amygdaloidal \a*myg`da*loid"al\ (&?;), ] a.
1. almond-shaped.
2. pertaining to, or having the nature of, the rock amygdaloid.
amygdaloid
\a*myg"da*loid\ (&?;), n. [gr. &?; almond + -oid: cf. f. amygdaloïde.] (min.) a variety of trap or basaltic rock, containing small cavities, occupied, wholly or in part, by nodules or geodes of different minerals, esp. agates, quartz, calcite, and the zeolites. when the imbedded minerals are detached or removed by decomposition, it is porous, like lava. [



Webster's Revised Unabridged Dictionary (1913)Download this dictionary
Amygdaloid
(n.)
A variety of trap or basaltic rock, containing small cavities, occupied, wholly or in part, by nodules or geodes of different minerals, esp. agates, quartz, calcite, and the zeolites. When the imbedded minerals are detached or removed by decomposition, it is porous, like lava.
  
 
(a.)
Alt. of Amygdaloidal
  

Webster's Revised Unabridged Dictionary (1913), edited by Noah Porter. About

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