Keyword: "chemistry shapes"

"The (010) plane of an orthoclase crystal." -Johannsen, 1908

"The (001) plane of an orthoclase crystal." -Johannsen, 1908

A simple orthoclase crystal.

A simple orthoclase crystal.

A simple orthoclase crystal.

"Simple orthoclase crystal showing cleavage lines and the position of the twinning plane in a Carlsbad…

"Simple orthoclase crystal opened out to show the optical orientation." -Johannsen, 1908

"A Carlsbad twin of orthoclase." -Johannsen, 1908

"A Baveno twin of orthoclase." -Johannsen, 1908

"Albite and Carlsbad twinning combined." -Johannsen, 1908

Clipart tagged: ‘chemistry shapes’