A geode +++ Not quite. A geode is a crystalline feature, but the crystalline rocks are generally the igneous ones, and minerals.
granite is a hard rockk madeof crystals
instrusive Rock
crystals
A rock with large crystals typically has a coarse texture. The large crystals are easily visible and may feel rough to the touch due to their size.
Igneous rocks typically contain crystals within their structure.
Intrusive or granite.
A rock is amineral
Yes.
Pretty much all of them with the exception of things like obsidian, which is a glass and by definition not crystalline. Note that the crystals in question may be extremely small (microcrystalline).
Intrusive rock normally has visible crystals. Extrusive igneous rock has small crystals. A black extrusive igneous rock with small crystals could be basalt.
If a granite rock is made of smaller crystals, it would be called fine-grained or fine-grained granite.
Cirrus clouds