... mineral occurring with alum-(K), halotrichite, metavoltine, quartz, römerite, stanleyite, sulphur, szomolnokite and mathesiusite. It forms rectangular blades flattened on {010} and elongated on [001], reaching ~0.3 mm in length. Crystals are yellow in colour, transparent with a vitreous lustre; the streak...

...Cristian Biagioni; Daniela Mauro; Marco Pasero; Elena Bonaccorsi; Giovanni Orazio Lepore; Federica Zaccarini; Henrik Skogby Abstract Thallium-bearing samples of alum-(K) and voltaite from the Fornovolasco mining complex (Apuan Alps, Tuscany, Italy) have been characterized through X-ray diffraction...

...Huaguo Wen; Wenli Xu; Yi Li; Yaxian You; Xiaotong Luo Abstract Siliceous-sulphate rock coatings were observed at Zhenzhu Spring, an acid sulphate hot spring in the Tengchong volcanic field, China. These rock coatings are mainly formed of gypsum and amorphous silica. Some alum-(K), voltaite, α...

...), and Upper Cambrian (alum shales) formation. Furthermore, a significant variation in the mass/volumes of accumulated hydrocarbons is observed within each of the shale formations being considered. 31 10 2017 26 5 2018 30 5 2018 2018 Society of Exploration Geophysicists and American...

...) and sulfate minerals (e.g. alum, jarosite, epsomite and melanterite) as documented in the Canon of Medicine of Avicenna (also known as Ibn Sina) and the Zakhireh Kharazmshahi of Jorjani, is compared with new findings about the advantages and disadvantages of these minerals in medical geology. The main...

...A. G. Shtukenberg; Yu. O. Punin Abstract Oscillatory zoning in solid solutions of alums ((K,NH 4 )Al(SO 4 ) 2 ·12H 2 O, K(Al,Cr)(SO 4 ) 2 ·12H 2 O, (K,Rb)Al(SO 4 ) 2 ·12H 2 O) and nitrates of divalent metals ((Sr,Pb)(NO 3 ) 2 , (Ba,Pb)(NO 3 ) 2 ) grown from low-temperature aqueous solutions...

...Cornelius Fischer; Volker Karius; Volker Thiel Abstract Low-grade metamorphic black slates were examined for the impact of oxidative weathering after exposure to the atmosphere for well-constrained time periods. Measurements of organic carbon were carried out on roofing slates and alum slate mining...

...Daniel E. Kile; D.D. Eberl Abstract Crystal growth experiments were conducted using potassium alum and calcite crystals in aqueous solution under both non-stirred and stirred conditions to elucidate the mechanism for size-dependent (proportionate) and size-independent (constant) crystal growth...

... as ‘alum’ but this oversimplification is discussed below) and sulphur which were documented by Pliny, Theophrastus and Dioscorides and which must have been ‘worked’, processed and ‘packaged’ on Melos in Roman times, before export. A survey of the island revealed about ten archaeological sites deemed...

...A. G. Shtukenberg; YU. O. Punin; V. N. Soloviev Abstract An experimental study of optical anomalies in solid solutions of alums in relation to their composition, growth temperatures and rates, and hydrodynamic regime was carried out. Theoretical analysis of the data showed that they can...

... Cambrian-Ordovician black Alum shales from the Baltic region have been investigated in the present work. This shale is very rich in organic matter (of algal origin) having a very high potential for oil generation, and was deposited in Scandinavia, the Baltic Sea, the Baltic countries, and Poland. The oil...