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Actinolite, from Kongsberg, Drammen, Buskerud, Norway (No.14)

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Actinolite, from Kongsberg, Drammen, Buskerud, Norway (No.14) Actinolite, from Kongsberg, Drammen, Buskerud, Norway

Measurements Approx.
Height - 2.1 cm
Width - 2.3 cm
Length - 6.5 cm



Actinolite is an amphibole silicate mineral, name actinolite is derived from the Greek word aktis (ἀκτίς), meaning "beam" or "ray", because of the mineral's fibrous nature.


  

Actinolite is commonly found in metamorphic rocks, such as contact aureoles surrounding cooled intrusive igneous rocks. It also occurs as a product of metamorphism of magnesium-rich limestones.


Fibrous actinolite is one of the six recognised types of asbestos, the fibres being so small that they can enter the lungs and damage the alveoli.


  

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