Pls pls pls help. I will give BRAINIEST

A

Ametrine containing amethyst and citrine, from Bolivia

Abelsonite

Abenakiite-(Ce)

Abernathyite

Abhurite

Abramovite

Althausite

Althupite

Altisite

Alum-(K)

Aluminite

Aluminium

Alunite

Alunogen

Amakinite

Amarantite

Amblygonite

Ameghinite

Amesite

Amicite

Amphibole (mineral group)

Analcime (analcite)

Anandite

Anapaite

Anatase

Ancylite (mineral group)

Andalusite

Andersonite

Andesine

Andorite (IV/VI)

Andradite

Andyrobertsite

Anglesite

Anhydrite

Ankerite

Annabergite

Annite

Anorthite

Anorthoclase

Antarcticite

Anthonyite

Anthophyllite

Antigorite

Antimony

Antitaenite

Antlerite

Apachite

Apatite (mineral group)

Aphthitalite

Apophyllite

Aragonite

Arcanite

Archerite

Arctite

Arcubisite

Ardaite

Arfvedsonite

Argentite

Argutite

Argyrodite

Armalcolite

Arsenic

Arseniosiderite

Arsenoclasite

Arsenolite

Arsenopyrite

Arthurite

Artinite

Artroeite

Ashburtonite

Ashoverite

Asisite

Astrophyllite

Atacamite

Athabascaite

Atheneite

Aubertite

Augelite

Augite

Aurichalcite

Auricupride

Aurostibite

Austinite

Autunite

Avicennite

Avogadrite

Awaruite

Axinite (mineral group)

Azurite

Varieties that are not valid species:

Adamantine spar (variety of corundum)

Agate (variety of chalcedony and quartz)

Alabaster (variety of gypsum)

Alexandrite (variety of chrysoberyl)

Allingite (synonym of amber)

Alum

Amazonite (variety of microcline)

Amethyst (purple variety of quartz)

Ametrine (variety of quartz)

Ammolite (organic; also a gemstone)

Amosite (asbestiform grunerite)

Antozonite (variety of fluorite)

Anyolite (metamorphic rock - zoisite, ruby, and hornblende)

Aquamarine (light blue variety of beryl)

Argentite (high temperature form of acanthite)

Asbestos (fibrous serpentine- or amphibole minerals)

Auerlite (variety of thorite)

Avalite (chromian variety of illite)

Aventurine (variety of quartz)

answer and explanation;

volcanic rocks are igneous rocks which form from lava, molten rock which has been thrust out of a volcano onto the surface of a rocky body such as an asteroid, planet, or dwarf planet.  

plutonic rocks are igneous rocks which form from subterranean chambers of molten rock or magma. plutonic rocks make up the base of continental crust as well as oceanic crust. their slow rate of formation causes them to be coarse grained since there is plenty of time for large crystals to form before the magma solidifies into rock.

the textural difference is that plutonic rocks are more coarse grained than volcanic rocks. plutonic rocks are coarse grained while volcanic are fine grained ; glassey or fragmental. since fine and coarse are adjectives the decision as to whether a rock is fine or coarse grained is generally made on the bases of whether or not the individual crystals can be seen in most if the rock.