Hornblende is a complex inosilicate series of minerals. It is not a recognized mineral in its own right, but the name is used as a general or field term...

Hornblende gabbro is an intrusive rock similar to normal gabbro (gabbro sensu stricto). In the QAPF classification it falls within the gabbro field, in...

is composed predominantly of sodium-rich plagioclase plus pyroxene or hornblende. Andesite is the extrusive equivalent of plutonic diorite. Characteristic...

Schist (/ˈʃɪst/ SHIST) is a medium-grained metamorphic rock showing pronounced schistosity. This means that the rock is composed of mineral grains easily...

silicate minerals plagioclase feldspar (typically andesine), biotite, hornblende, and sometimes pyroxene. The chemical composition of diorite is intermediate...

also extends towards hornblende and arfvedsonite. There is not a continuous series between calcic clinoamphiboles, such as hornblende, and low-calcium amphiboles...

Ferro-ferri-hornblende is an amphibole-supergroup mineral with the formula ☐Ca2(Fe2+4Fe3+)(Si7Al)O22(OH)2. It contains essential vacancy (☐). It was discovered...

granular aggregates of clear green hornblende: in fact the original structure disappears. In Norway scapolite-hornblende rocks have long been known at Ødegården...

less than 5% each of pyroxene or hornblende. Hornblende gabbro is composed almost entirely of plagioclase and hornblende, with less than 5% each of pyroxene...

(/æmˈfɪbəlaɪt/) is a metamorphic rock that contains amphibole, especially hornblende and actinolite, as well as plagioclase feldspar, but with little or no...