Provide a detailed rock description. Must include: - Modal minerology (e.g. 35%

Question

Provide a detailed rock description.

Must include:

- Modal minerology (e.g. 35% quartz, 25% plagioclast etc.),

- Detailed description (e.g. Sample X1 is a light-coloured rock, with pinkish K-feldspar crystals. The sample is coarse grained (grainsize range: 2-10 mm), phaneritic, and has a weakly porphyritic texture, with K-feldspar phenocrysts being larger than the other minerals on average. Plagioclase, K-feldspar and biotite exhibit subhedral microstructures, quartz is anhedral. The rock exhibits no obvious metamorphic fabrics (foliation is absent))

- other features

- A Rock name

Explanation / Answer

BASALT

The given image and description are showing that this is Basalt.

Basalt is a dark-colored, fine-grained, igneous rock composed mainly of plagioclase and pyroxene minerals. It most commonly forms as an extrusive rock, such as a lavaflow, but can also form in small intrusive bodies, such as an igneous dike or a thin sill. It has a composition similar to gabbro.

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