Formula: K₂Ca₅(SO₄)₆ · H₂O

Species:

Colour: Colorless, white, pale yellow, greenish yellow

Lustre: Vitreous

Hardness: 3½

Specific Gravity: 2.90 – 2.93

Crystal System: Monoclinic

Name: Named in honor of Rudolf Görgey von Görgö und Toporcz (Rolf Görgey) (1886-1915), mineralogist at the University of Vienna. He first studied zeolites and later salt/potash deposits. Through his work, he visited many European countries and built a mineral collection.

Type Locality: Ischler Salzberg, Perneck, Bad Ischl, Gmunden District, Upper Austria – Austria

Isostructural with: Campostriniite