White crystal of the very rare mineral with a simple chemistry (MgSO4. 2 H2O) sanderite from the type locality in Germany (Niedersachsen Potash Works, Wathlingen, Celle, Lower Saxony, Germany) in a completely analyzed specimen by SEM/EDS. Ex Vandenbroucke Museum collection from Waregem, Belgium. — Photo: David Hospital · CC BY-SA 4.0
Sanderite
Sanderite is an IMA-recognized mineral species in the sulfate class, with the chemical formula Mg(SO₄)·2H₂O.
It crystallizes in the orthorhombic crystal system (space group P2_12_12_1).
IMA symbol Sdr, grandfathered status — known before the IMA’s founding, named in 1952.
Index entry. This entry combines official IMA/RRUFF species data with published physical-property data — a full written entry hasn’t been published yet.
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