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Natrolite — specimens [gallery view]
In cavities in
basalts
and related
igneous rocks
; fills seams in
granite
,
gneiss
, and
syenite
(
Anthony et al., 2001—2005
). Faceted specimens are very rare.
0588
USA
Natrolite — specimens — 1
Page 1
Gemmology — gemstones
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The specimens illustrated in this site do not exist in the collections of the National Museum of Natural History, Sofia.