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| Heart-shaped growth spiral on 0.5-mm graphite crystal, etched from calcite. |
Multiple growth spirals on 0.5-mm graphite crystal, etched from calcite. |
Assorted growth spirals on 0.8-mm graphite crystal. |
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| Double growth spiral on a sharp 0.2-mm graphite crystal, etched from calcite |
Growth steps with secondary steps nucleated at the corners of larger steps | Growth spirals on a sharp 0.8-mm hexagonal graphite crystal. The main crystal also has a growth twin (black). A thin rounded crystal of chlinochore is sitting over some of the sprals. |
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