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Ulexite. Ulexite (hydrated sodium calcium borate hydroxide), also known as TV Rock or TV Stone), is a mineral that has a structure of closely-packed parallel crystal fibers. The fibers transmit light along their lengths by internal reflection. Ulexite is an example of fiber optic properties occurring in nature. Shown here is a ulexite specimen placed over "TV Rock" written on a white paper.
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Creative#:
TOP22291778
Source:
達志影像
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RM
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