Contact Goniometer

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“An important part of the study of crystallography consists in the measuring and classifying of the interfacial angles on the crystals of all minerals. These measurements are accomplished by means of instruments known as goniometers.” — Ford, 1912




William E. Ford Dana's Manual of Mineralogy (New York: John Wiley and Sons, Inc, 1912) 6


TIFF (full resolution)

2400×2103, 625.7 KiB

Large GIF

1024×897, 95.8 KiB

Medium GIF

640×560, 49.8 KiB

Small GIF

320×280, 19.7 KiB