Geode Zwijndrecht

04/05/2026

Rhodonite - mim 2115 - Australia
Broken Hill Proprietary Mine, New South Wales
CaMn3Mn(Si5O15)

Previous collection: Albert Chapman (Australie)
Published in: “Mineralogical Record, Nov-Dec 1992”, "Mineralogical Record: May-Jun 2007"

Largest crystal: 9.5 cm
Dimensions: 3.5 x 2.5 x 9.5 cm

Large, translucent red doubly terminated and intact crystal, with surfaces showing a beautiful iridescence. Some hexagonal crystals of the rare mineral pyrosmalite-(Mn) (the largest measuring 0.9 cm) have developed on the faces, which is typical of this mine.

Grand cristal biterminé et intact, translucide de couleur rouge avec des surfaces présentant une belle irisation. Quelques cristaux hexagonaux du minéral rare pyrosmalite-(Mn) (le plus grand mesurant 0.9 cm) se sont développés sur les faces, ce qui est typique de cette mine.

02/05/2026

Anglesite.

Location, Touissit, Touissit-Bou Beker mining district, Jerada Province, Oriental Region, Morocco.

(Credit to Jeffrey A. Scovil)

01/05/2026

Natrolite & Strontianite.

Location, Kirovskii apatite mine, Kukisvumchorr Mt, Murmansk Oblast, Russia.

(Credit to Matthäus Parshchikov)

26/04/2026