Natrolite crystals. Slender, radiating crystal needles (white) of the mineral natrolite. This mineral, a tectosilicate (Na2Al2Si3O10), belongs to the zeolite group of minerals. Like most zeolites, natrolite occurs in cavities or open cracks in basaltic igneous rocks. This sample is 10 centimetres across.

px px dpi = cm x cm = MB
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Creative#:

TOP03207862

Source:

達志影像

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RM

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須由TPG 完整授權

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