orbicule

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An ancient egyptian hieroglyphic painted carving showing the falcon headed god Horus seated on a throne and holding a golden fly whisk. Before him are the Pharoah Seti and the goddess Isis. Interior wall of the temple to Osiris at Abydos, Egypt.

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Woman tied to a ducking stool, a method of punishment by means of humiliation, beating, or death. (cucking stool)

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Leonardo da Vinci (1452-1519), Italian Renaissance painter from Florence. Engraving by Cosomo Colombini (d. 1812) after a Leonardo self portrait. Ca. 1500.

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Mayer Amschel Rothschild (1744-1855), founder of the house of Rothschild; lithograph by Friedrich Lieder, c. 1830.

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orbicule

geology

Learn about this topic in these articles:

occurrence in igneous rocks

In igneous rock: Small-scale structural features
The term orbicular is applied to rounded, onionlike masses with distinct concentric layering that are distributed in various ways through otherwise normal-appearing phaneritic rocks of silicic to mafic composition. The layers within individual masses are typically thin, irregular, and sharply defined, and each differs from its immediate…
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type of spherulite

In spherulite
…manifest concentric shells are called orbicules and are found in some granites and syenites. The shells have different mineralogies and in orbicular granite and granodiorite the bulk composition differs from that of the host rock. Orbicules are rare in gabbros. Suggested origins include devitrification of glass around scattered nuclei, inclusions…
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