Crystal structure of <a href="https://en.wikipedia.org/wiki/Bl%C3%B6dite" class="extiw" title="en:Blödite">Blödite</a> (Na<sub>2</sub>Mg[SO<sub>4</sub>]<sub>2</sub>·4H<sub>2</sub>O) as "ball-and-stick-model" with viewing direction perpendicular to plane a-b.
<a href="https://de.wikipedia.org/wiki/Ra%27ike" class="extiw" title="de:Ra'ike">Ra'ike</a> (Wikipedia)
<span class="int-own-work" lang="en">Own work</span>