Orthoclase sample courtesy of Perkins Museum of Geology, University of Vermont. Orthoclase is number 6 on the Mohs hardness scale.

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Creative#:

TOP22095233

Source:

達志影像

Authorization Type:

RM

Release Information:

須由TPG 完整授權

Model Release:

N/A

Property Release:

No

Right to Privacy:

No

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