Andesite Basalt Use the followab the i k show Diorite ue: The dark red red Gabbr
ID: 109759 • Letter: A
Question
Andesite Basalt Use the followab the i k show Diorite ue: The dark red red Gabbro tions wh intersect i Co Granite sitior Komatite Peridotite tab V Select an answer . Use the following table to describe and identify the metamorphic llo lue: The rock contains chlorite 7.0 Arkose nsi is 0.2 Conglomerate n si Diamictite Greywacke Mudstone exture select an answer : Description Clast size dentification Marb artz arenite Metabasalt Part 2: Proje 1 Metapelite the method d n experiment to mea Clast charactExplanation / Answer
1. ANDESITE
Colour - variable, but typically bluish-grey or grey (lighter coloured than basalt).
Texture - porphyritic.
Mineral content - groundmass generally of pyroxene (augite) and plagioclase, possibly with minor amounts of amphibole (hornblende) and glass; phenocrysts of plagioclase and often pyroxene, occasionally olivine or amphibole.
2. Mudstone
Grain size - very fine-grained (< 0.06mm); clasts not visible to the naked eye.
Hardness - generally quite soft, but can be hard and brittle.
Other features - smooth to touch and cleavage planes are visible
soft to be of use.
3.Metapatite: because of the fine graied structure resembles a metphyllitic rock.