Schafarzikite from the type locality Pernek (Male Karpaty Mountains, Slovak Republic) revisited

Raman spectra of minerals containing interconnected As(Sb)O3 pyramids: trippkeite and schafarzikite

“…The unit-cell parameters for trippkeite are a = 8.5941(3) and c = 5.5728(4) Å. Schafarzikite crystals are prismatic, dark brown to black in color and have an adamantine to metallic luster with unit-cell parameters a = 8.6012(3) and c = 5.9133(4) Å. The newly refined unit-cell dimensions are in an excellent agreement with those given by Pertlik (1975) for trippkeite (a = 8.59 and c = 5.57 Å) as well as by Fischer and Pertlik (1975) and Sejkora et al (2007) …”

“…1) are based on the sequence of band energies given by Nakamoto (1997) with ν 1 > ν 3 > ν 2 > ν 4 and are also facilitated by comparing the band positions with those given by Bahfenne (2011 and Sejkora et al (2007) for trippkeite and schafarzikite and those presented by Hirschle and Röhr (2000) and Emmerling and Röhr (2003) for oxo-arsenates and -antimonates. were assigned to the symmetric ν 1 (A 1 ) As-O stretching modes (Tab.…”

“…Pertlik (1988) also showed that the two synthetic lead chain-arsenite chlorides Pb(AsO 2 )Cl and Pb 2 (AsO 2 ) 3 Cl contain the same AsO 3 chain polymer, as does the mineral leiteite, ZnAs 2 O 4 (Ghose et al 1987). Schafarzikite is a meta-antimonite mineral containing polymeric SbO 3 pyramids (Krenner 1921;Zemann 1951a;Fischer and Pertlik 1975;Sejkora et al 2007). Despite the work that has been done on the crystal structures of trippkeite and schafarzikite, Raman spectroscopic studies, at least of oriented trippkeite, have not been published so far.…”

“…Despite the work that has been done on the crystal structures of trippkeite and schafarzikite, Raman spectroscopic studies, at least of oriented trippkeite, have not been published so far. In general, there exist very few works dealing with Raman spectroscopy of "not oriented" trippkeite (Bahfenne 2011;Bahfenne et al 2011) or "not oriented" (Sejkora et al 2007) and "oriented" schafarzikite (Bahfenne 2011;Bahfenne et al 2011).…”

The supergene mineral association with brandholzite from Pernek, Malé Karpaty Mountains, Slovak Republic

“…Supergene minerals known from this deposit are azurite, cervantite, kermesite, malachite, sénarmontite, schafarzikite, valentinite, unidentified sul phates, iron oxides and hydroxides, as well as Sbochres. Sejkora et al (2007) published a description of the newly found primary schafarzikite-valentinite-kermesite-sé narmontite mineral association. This association is com parable with stibnite-kermesite-valentinite assemblage published by Cambel (1959).…”