File:1911 Britannica-Arachnida-Aragonite.png
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| Description |
English: Twinning on the prism planes (M in the figures) being a characteristic feature of the Aragonite (fig. 1). This twinning is usually often repeated on the same plane (fig. 2), and gives rise to striations on the terminal faces (k) of the crystals. Illustration from 1911 Encyclopædia Britannica, article Aragonite. |
| Date | |
| Source |
 Encyclopædia Britannica Eleventh Edition, Vol. 2, Page 314 |
| Author | Encyclopædia Britannica, 1911 |
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This image comes from the 13th edition of the Encyclopædia Britannica or earlier. The copyrights for that book have expired in the United States because the book was first published in the US with the publication occurring before January 1, 1929. As such, this image is in the public domain in the United States. |  |
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| Date/Time | Thumbnail | Dimensions | User | Comment | |
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| current | 20:07, 5 November 2012 | | 285 × 216 (51 KB) | Clarice Reis (talk | contribs) | User created page with UploadWizard |
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