New mineral species for Hungary in 2006
SULFIDE
Jonassonite: Au(Bi,Pb)5S4; monoclinic
Locality: dump of Alsó-Rózsa adit, Nagybörzsöny, Börzsöny Mts. (type locality!)
Description: tin white grains up to 0.5 mm with metallic luster in association with arsenopyrite, bismuthinite and native bismuth.
CARBONATE
Kochsándorite: CaAl2(CO3)2(OH)4 • H2O; orthorhombic
Locality: dump of I/A shaft, Mány coal mine, Zsámbék Basin (type locality!) as well as Tatabánya coal field.
Description: white, lath shaped crystals up to 0.4 mm in length in radial-globular aggregates up to 4 mm in diameter. Aggregates were found in brown coal in association with böhmite, calcite, gibbsite, kaolinite, gypsum and felsőbányaite.
SULFATES
Ardealite: Ca2H(SO4)(PO4) • 4H2O; monoclinic
Locality: Libanon room, Baradla cave, Aggtelek.
Description: a component of off-white, earthy aggregates located in bat guano. Ardealite forms elongated prismatic crystals up to 30 µm in length in association with lens shaped gypsum.
Efremovite: (NH4)2Mg2(SO4)3; cubic
Locality: dump of air shaft No. III of the Komló coal mine, Mecsek Mts.
Description: light brown aggregates and encrustations in association with mascagnite and mohrite in cavities of tschermigite. It formed from decomposition of pyrite, marcasite and organic material during slow burning of the coal dump.
Godovikovite: (NH4)(Al,Fe3+)(SO4)2; hexagonal
Locality: open cast coal mine, Pécs-Vasas, Mecsek Mts.
Description: creamy or light pink, fine crystalline encrustations in association with voltaite and kieserite. It is a component of recent sulfate precipitations.
Khademite: Al[(F,OH)(SO4)] • 5H2O; orthorhombic
Locality: drain adit of clay mine, Felsőpetény, Cserhát Mts.
Description: snow white, globular-reniform encrustations, which consist of thin tabular crystals up to 10 µm. Associated mineral is gypsum.
Kieserite: MgSO4 • H2O; monoclinic
Locality: open cast coal mine, Pécs-Vasas, Mecsek Mts.
Description: off white or pale grey, fine-grained encrustations in association with hexahydrite and godovikovite. In all probability it was formed from hexahydrite by dehydratation.
Metavoltine: K2Na6Fe2+Fe63+[O2(SO4)12] • 18 H2O; hexagonal
Locality: dump of air shaft No. III of the Komló coal mine, Mecsek Mts.
Description: honey yellow, yellowish brown, stubby prismatic or tabular crystals up to 0.1 mm, which form encrustations mainly in fissures of tschermigite.
Mohrite: (NH4)2Fe2+(SO4)2 • 6H2O; monoclinic
Locality: dump of air shaft No. III of the Komló coal mine, Mecsek Mts.
Description: lemon yellow or brownish yellow pseudohexagonal tabular crystals up to 0.05 mm forming loose aggregates (0.5-2 mm) in cavities of tschermigite.
Potassium alum: KAl(SO4)2 • 12H2O; cubic
Locality: dump of air shaft No. III of the Komló coal mine, Mecsek Mts.
Description: colorless, octahedral crystals up to 0.5 mm among other recent sulfate minerals (e.g. tschermigite, alunogen, clairite, etc.).
Ramsbeckite: (Cu,Zn)1302Zn2[(OH)22(SO4)4] • 6 H2O; monoclinic
Locality: Adolf mine, Rudabánya.
Description: emerald green, equant or thick tabular crystals up to 0.5 mm in diameter in small cavities of earthy smithsonite.
Sabieite: (NH4)Fe3+(SO4)2; trigonal
Locality: dump of air shaft No. III of the Komló coal mine, Mecsek Mts.
Description: white powdery aggregates together with efremovite and mohrite in cavities of tschermigite.
PHOSPHATES AND ARSENATES
Chalcophyllite: Cu9[Al(AsO4)2(SO4)1,5(OH)12] • 18 H2O; trigonal
Locality: Fehér-kő Hill, Parádfürdő, Mátra Mts.
Description: light greenish blue, transparent or translucent, hexagonal tabular crystals up to 0.4 mm in diameter in cavities of quartz veins.
Corkite: PbFe33+[(SO4)(PO4)(OH)6]; trigonal
Locality: Fényes Hill, Miskolc-Diósgyőr, Bükk Mts.
Description: olive green encrustations up to 2 mm in thickness in cavities of strongly silicified magmatite. Associated minerals are jarosite and goethite.
Hinsdalite: PbAl3[(SO4)(PO4)(OH)6]; trigonal
Locality: Meleg Hill, Nadap, Velence Mts.
Description: white or pale brown tabular crystals up to 2 mm in diameter with pearly luster as well as fan shaped aggregates in cavities of strongly silicified magmatite. Alunite can be found in the cores of hinsdalite crystals.
Sabelliite: (Cu,Zn)2Zn[(As,Sb)O4(OH)3]; trigonal
Locality: Hajógyár quarry, Balatonfüred, Balaton Highland.
Description: light blue or light greenish blue coatings up to 0.3 mm in thickness, or globular aggregates and nests up to 0.5 mm in fissures of dolostone. Associated minerals are azurite and malachite. It was formed by weathering of tetrahedrite.
Phosphosiderite: Fe3+(PO4) • 2 H2O; monoclinic
Locality: Fényes Hill, Miskolc-Diósgyőr, Bükk Mts.
Description: off white porous aggregates and encrustations up to 6 mm in cavities of strongly silicified magmatite. Associated minerals are jarosite, goethite and corkite.
SILICATE
Osumilite-(Mg): (K,Na)2(Mg,Fe2+)2(Al,Fe3+)3[(Si,Al)12O30]; hexagonal
Locality: Badacsony Hill, Badacsonytördemic basalt quarry, Balaton Highland.
Description: a component of dark grey or black, glassy veinlets located in white, coarse grained quartz aggregates (buchite xenolith). Associated minerals are cordierite, magnetite and orthopyroxene. It forms anhedral or subhedral grains up to 0.1 mm in diameter.
Sándor Szakáll
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