Open AccessX-ray investigation of bøggildite
Author(s) -
Chr. Knakkergaard Møller
Publication year - 1956
Publication title -
bulletin
Language(s) - English
Resource type - Journals
eISSN - 2597-2936
pISSN - 0105-3507
DOI - 10.34194/bullggu.v14.6546
Subject(s) - crystal twinning , monoclinic crystal system , superstructure , crystallography , x ray , group (periodic table) , materials science , space (punctuation) , physics , optics , chemistry , crystal structure , philosophy , linguistics , quantum mechanics , microstructure , thermodynamics
X-ray investigation of single crystals of Bøggildite shows that they are monoclinic and belong to space group No. 14 P21/ C. The axes are a = 5.24 Å, b = 2 a = 10.48 Å, c = 18.52 Å and β = 107°.35. The presence of weak extra layer lines is interpreted as being due to a twinning or superstructure. The externaJ faces are (012) with its analogues.