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![[Figure 2]](gj5326fig2mag.jpg)
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Figure 2
Intergrowth of calcite domains, projected along 〈441〉 and 〈111〉, suggesting homo-epitaxies between {1120}//{1120} and {1108}//{1102} interfaces. (a) BFTEM image from Okhotnichya cave calcite. The right upper corner of the grain shows sharp edges parallel to 〈104〉 direction of calcite. The central portion of the grain displays a mottled texture. EDS data, shown in the lower left corner, confirm the sample is pure calcium carbonate. The Mg Kα line (black arrow) is under the detection limit (0.5 m%). (b) and (c) SAED patterns taken from the black circled area of (a) and its interpretation as calcite domains viewed along 〈441〉 and 〈111〉. White rectangles mark overlapping reflections, and reflections belonging to one domain only are marked by open black and white circles. Black and white arrows point to reflections with 7.70 and 5.00 Å spacing corresponding to doubled  and  spacings, respectively. (d) Selected regions of the HRTEM image, taken from the rectangular area marked `d' in (a), display  , doubled , and doubled spacings. (e) and (f) are FFTs calculated from regions `e' and `f' of (d) and their interpretation as calcite viewed along 〈111〉 and 〈441〉. |
![[Figure 2]](gj5326fig2.jpg)
 | JOURNAL OF APPLIED CRYSTALLOGRAPHY |
ISSN: 1600-5767
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