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Figure 1
We examined (Aquilano et al., 2019BB1) the indexing of dominant forms belonging to more than 200 single and twinned aragonite crystals grown in different geological sites: (a) prismatic {110}, {011} and pinacoidal {010} forms on single crystals; (b) repeated contact {110} twins; (c) repeated penetration {110} twin showing the {001} form as well. Note that, from our historical research, the basal {001} form appears in 45% of twins and in only 23% of single crystals. Crystals redrawn after Goldschmidt (1913BB15).

Journal logoJOURNAL OF
APPLIED
CRYSTALLOGRAPHY
ISSN: 1600-5767
Volume 56| Part 6| December 2023| Pages 1630-1638
https://doi.org/10.1107/S1600576723008208
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