journal menu
![[Figure 1]](gj5326fig1mag.jpg)
|
|
Figure 1
Intergrowth of calcite domains, projected along 〈110〉 and 〈001〉 and suggesting homo-epitaxy between {1120}//{1120} and {0001}//{1100} interfaces. (a) BFTEM image of a grain from the Okhotnichya cave calcite displaying sharp and rugged edges. A black arrow marks the c crystallographic direction of calcite. 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) SAED pattern taken from the circled area marked `b' in (a) and its interpretation as calcite viewed along 〈110〉. (c) SAED pattern taken from the circled area marked `c' in (a) and its interpretation as calcite domains viewed along 〈110〉 and 〈001〉. Overlapping reflections are marked by white rectangles, and reflections belonging to one domain only are marked by open black and white circles. Black arrows point to reflections with 5.0 Å spacing corresponding to doubled  spacing. (d) Selected regions of the HRTEM image, taken from the rectangle area marked `d' in (a), display 2.50 and 5.00 Å spacing corresponding to and doubled spacing, respectively. |
![[Figure 1]](gj5326fig1.jpg)
 | JOURNAL OF APPLIED CRYSTALLOGRAPHY |
ISSN: 1600-5767
access
