... in which iron octahedra are linked by sulfate tetrahedra in the monoclinic space group P 2 1 / m with lattice parameters a = 10.711(1), b = 11.085(1), and c = 5.5747(5) Å, β = 98.853(3)°. We compare these results with the type specimen of lausenite from Jerome, Arizona, which has monoclinic lattice...

...Fig. 5 Top view of the crystal structures of kornelite and lausenite, shown as polyhedral models (left) and topological schemes (right). In the topological schemes, only the cations are shown, Fe 3+ as grey circles and S 6+ as white circles. Dashed lines in the scheme of lausenite show...

... fingerprinted. Examples would include quenstedtite, coquimbite, kornelite, and lausenite, which have indistinguishable spectra, as do apjohnite, bilinite, dietrichite, and römerite. Overlap of Mössbauer parameters is a particular complication for identification of Fe 3+ -rich phases because the range...

.... Lausenite, Fe 2 (SO 4 ) 3 ·5H 2 O, and Fe 2 (SO 4 ) 3 ·6H 2 O are both plotted. Majzlan et al. (2005) described the atomic structure of Fe 2 (SO 4 ) 3 ·5H 2 O. ...

... in May 2019; Pasero, 2019 ), the system Fe 2 O 3 –SO 3 –H 2 O consists of 16 mineral species ( Table 1 ). Among them, five phases share the same formula Fe 2 (SO 4 ) 3 ⋅ n H 2 O, where n  = 5 (lausenite), 7 (kornelite), 9 (coquimbite and paracoquimbite) and 11 (quenstedtite). However, the inclusion...

... be drawn until the structure of the unidentified phase is solved. Efforts are underway to grow single crystals for a structure solution. Some known ferric sulfate minerals were not found in this study, such as lausenite [Fe 2 (SO 4 ) 3 ·5H 2 O] ( Majzlan et al. 2005 ), coquimbite [Fe 2 (SO 4 ) 3 ·9H 2...

.... At the time when the calorimetric experiments were performed, we assumed that this phase is identical with the mineral lausenite. Later investigation ( Majzlan et al. , 2005a ) showed that the relationship is not straightforward. Yet, because the studied phase belongs to the chemical system under...

...), lausenite (lau), ferrinatrite (fnat), metavoltine (metv), krausite (kra), rhomboclase (rhom), yavapaiite (yav), jarosite (jar), schwertmannite (sh), ferrihydrite (fer), goethite (goe), hematite (hem), and maghemite (magh). ...

... for pertlikite are δ = 0.41 mm/s and Δ = 0.16 mm/s, which are similar to those for other hydrous sulfates, particularly those in the hydration series Fe 2 (SO 4 ) 3 · n H 2 O, which includes quenstedtite, coquimbite, paracoquimbite, kornelite, and lausenite. The Fe 3+ doublets with the same parameters are also...

... such as lausenite (lau) are rare in AMD environments; they can form only under strongly acidic conditions. More common minerals, such as copiapite (cop), fall near the most direct path leading from melanterite (mel) to goethite (goe). By examining the geochemistry, mineralogy, and occurrence of these phases, we can...