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Slavikite - Valachov Hill, Skřivaň, Central Bohemia Region, Bohemia (Böhmen; Boehmen), Czech Republic (Type Locality) (#:MINS9234)

Slavikite is a rare hydrated Sodium, Magnesium, Iron Sulfate, and specimens from the type locality are certainly not commonly available. This piece features classic yellow color Slavikite masses on matrix.

Formula :
NaMg₂Fe₅²⁺[(OH)₆/(SO₄)₇] * 33 H₂O
System: trigonal Hardness:3.5 Rarity:rare
Strunz id:VI/D.14-40 - SULFATES, CHROMATES, MOLYBDATES and TUNGSTATES
Name origin: For František Slavík (July 18, 1876 - January 27, 1957), Charles University in Prague where he was Dean of the Faculty of Science from 1924 to 1925 and Rector from 1937 to 1938 (Am. Mineral. 43, 325-330).