Edenite
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Edenite or edenitic hornblende is a double chain silicate mineral of the amphibole group with the general chemical composition NaCa2Mg5O222. Edenite is named for the locality of Edenville, Orange Coun
Edenite crystal from Bancroft District, Ontario
Metamorphic rock
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Metamorphic rocks arise from the transformation of existing rock to new types of rock in a process called metamorphism. The original rock is subjected to temperatures greater than 150 to 200 °C and, o
Quartzite, a type of metamorphic rock
Metamorphic rock, deformed during the Variscan orogeny, at Vall de Cardós, Lérida, Spain
Amphibolite formed by metamorphism of basalt
Metamorphic rock containing staurolite and almandine garnet