New mineral species for Hungary in 2005

OXIDES

Brookite: TiO₂; orthorhombic

Locality: Fényes Hill, Miskolc-Diósgyőr, Bükk Mts.
Description: brown or sometimes zonal, translucent or opaque tabular crystals up to 2-3 mm in fissures of strongly silicified magmatite. It is associated with albite.

Sphaerobismoite: Bi₂O₃; tetragonal

Locality: dump of Alsó-Rózsa adit, Nagybörzsöny, Börzsöny Mts.
Description: colorless or white, rectangular tabular crystals in globular aggregates up to 0.1 mm in diameter. Sphaerobismoite occurs in fissures or on cleavage planes of bismuthinite and native bismuth. It is a secondary mineral.

SULFATE

Clairite: (NH4)₂Fe₃(OH)₃(SO₄)₄ • 3H₂O; triclinic

Locality: dump of air shaft No. III of the Komló coal mine, Mecsek Mts.
Description: yellow, powdery or irregular aggregates up to 1,5 mm in cavities of tschermigite. It is a secondary mineral.

SILICATES

Clinohumite: (Mg,Fe)₉(F,OH)₂(SiO₄)₄; monoclinic

Locality: in a gravel pit at Dunavarsány.
Description: honey yellow and yellowish brown anhedral or subhedral crystals up to 3 mm with vitreous luster in a big marble boulder located in Pleistocene gravel bed.

Cowlesite: CaAl₂Si₃O₁₀10 • 5–6H₂O; orthorhombic

Locality: Pálbükk quarry, Pilisszentlászló, Pilis Mts.
Description: globular aggregates (up to 0.5 mm in diameter) consist of snow white, lath shaped crystals with pearly luster in small cavities of andesite. Surface of aggregates are sometimes brown because of coloration of iron oxides.

Gobbinsite: Na₅Al₆Si₁₀O₃₂? • 12H₂O; orthorhombic

Locality: Haláp Hill, Zalahaláp, Balaton Highland.
Description: snow white globular aggregates up to 3 mm in diameter with dull or slightly pearly luster in intimate intergrown with okenite in amygdules of basalt.

ORGANIC MINERAL

Hartite: C₂0H₃₄; triclinic

Locality: dump of Edelény coal mine.
Description: main component of dark brown resins located in fissures filled chalcedony of brown coal.