Talk:Widgiemoolthalite

Study

 * Structure check: density
 * Mg5(CO3)4(OH)2·4H2O (ideal hydromagnesite): 2.255 g/cm3
 * (467.63763 x 2)/ (0.688777 x 10-21 x 6.022 x 1023)
 * (Formula mass: 467.63763 g/mol; Z = 2; Volume: 0.688777 nm3)
 * (Mg,Ni)5(CO3)4(OH)2·4H2O: 2.669 g/cm3
 * (Formula mass: 553.6086 g/mol; Z = 2; Volume: 0.688777 nm3)
 * (Ni,Mg)5[OH|(CO3)2]2·5H2O (widgiemoolthalite): 3.058 g/cm3
 * (Formula mass: 614.609304 g/mol; Z = 2; Volume: 0.6675 nm3)
 * 2.5 times Ni - 2.5 times Mg: (58.6934 u x 2.5) - (24.305 u x 2.5)
 * (Avogadro constant: 6.022×1023 mol-1)
 * Ref.: Mineralienatlas
 * --Chris.urs-o (talk) 06:46, 8 December 2016 (UTC)

Near-duplicate images
It isn't easy to think of any good reason why an article should be illustrated with two images with identical captions and very similar appearances. Since the second one was less sharp (out of focus or at poor resolution, or both) than the first, I've removed it. Chiswick Chap (talk) 08:02, 2 February 2017 (UTC)