Examples of hornblende

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Locally, hornblende contains remnant clinopyroxene cores indicating that it crystallized later.
Similar serpentine, hornblende, chlorite, anthophyllite + talc-filled faults also cross-cut the peridotites above and amphibolites below the contact.
The hornblende lacks ductile bends and recrystallized margins.
Clinopyroxenes and hornblendes were dipped into hydrochloric acid in a water bath to decompose any associated impurities.
The heavymineral assemblage consists of mainly zircon, apatite and monazite plus minor amounts of sphene and hornblende.
Two types of plagioclase and hornblende can be distinguished.
However, much of the hornblende is replaced by chlorite.
Most clinopyroxene has been replaced by green-brown hornblende.
Separation of the green hornblende was perfect, but we could not remove all grains of green hornblende attached to biotite.
In weakly deformed gneiss, the mafic minerals (biotite, augite and hornblende) occur as irregular clusters, locally separated from plagioclase by coronas of garnet.
Primary hornblende is commonly partially replaced by fine decussate biotite indicative of some static recrystallization, although plagioclase retains igneous zoning.
Here, the igneous and corona textures are obliterated by the growth of amphibolite-facies assemblages with hornblende, plagioclase, biotite, garnet and zoisite.
The finegrained matrix is composed of plagioclase, quartz, garnet, biotite and hornblende and/or augite.
Biotite-rich granitoid is much more common than the hornblende-rich granitoid.

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