GEOLOGICAL SPECIMENS MINERAL HORNBLENDE CLEAVABLE
- RM6318-01
Hornblende is a rock-forming mineral that is an important constituent in acidic and intermediate igneous rocks such as granite, diorite, syenite, andesite, and rhyolite. It is also found in metamorphic rocks such as gneiss and schist. A few rocks consist almost entirely of hornblende.
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