Rudabányaite

rudabanyaite

sphaerosiderite

limonite

Images

Formula: (Ag2Hg2)(AsO4)Cl
Arsenate
Crystal System: Isometric
Specific gravity: 8.04 calculated
Hardness: 3 to 4
Streak: Lemon-yellow
Colour: Yellowish orange to brownish yellow
Rudabányaite is a relatively new mineral, approved in 2016 and to date (March 2024) reported only from the type locality.

Localities

At the type locality, the Adolf Mine, Rudabánya, Kazincbarcika District, Borsod-Abaúj-Zemplén County, Hungary, rudabányaite was found in cavities of siliceous sphaerosiderite and limonite rocks; it forms small crystals up to 0.6 mm in size and aggregates of a few mm across (EJM 31.537-547).

Rudabányaite from the Adolf Mine - Image

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