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...
8 KB (793 words) - 11:35, 6 April 2024
Hornblende gabbro is an intrusive rock similar to normal gabbro (gabbro sensu stricto). In the QAPF classification it falls within the gabbro field, in...
2 KB (179 words) - 14:10, 27 July 2023
Andesite (redirect from Hornblende andesite porphyry)
is composed predominantly of sodium-rich plagioclase plus pyroxene or hornblende. Andesite is the extrusive equivalent of plutonic diorite. Characteristic...
25 KB (2,767 words) - 23:46, 10 May 2024
Schist (redirect from Hornblende schist)
Schist (/ˈʃɪst/ SHIST) is a medium-grained metamorphic rock showing pronounced schistosity. This means that the rock is composed of mineral grains easily...
17 KB (1,843 words) - 02:53, 22 July 2024
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...
2 KB (115 words) - 16:08, 18 October 2023
also extends towards hornblende and arfvedsonite. There is not a continuous series between calcic clinoamphiboles, such as hornblende, and low-calcium amphiboles...
15 KB (1,556 words) - 23:57, 4 March 2024
silicate minerals plagioclase feldspar (typically andesine), biotite, hornblende, and sometimes pyroxene. The chemical composition of diorite is intermediate...
23 KB (2,458 words) - 11:51, 12 August 2024
(/æmˈfɪbəlaɪt/) is a metamorphic rock that contains amphibole, especially hornblende and actinolite, as well as plagioclase feldspar, but with little or no...
9 KB (1,012 words) - 14:30, 9 January 2024
feldspar and quartz with scattered darker biotite mica and amphibole (often hornblende) peppering the lighter color minerals. Occasionally some individual crystals...
57 KB (6,589 words) - 13:07, 12 September 2024
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...
19 KB (2,320 words) - 02:21, 7 September 2024