Original paper
Kuzelite, [(SO4)· 6H2O], a new mineral from Maroldsweisach/Bavaria, Germany
[Ca4Al2 (OH)12]
Pöllmann, H.; Witzke, T.; Kohler, H.
Neues Jahrbuch für Mineralogie - Monatshefte Jg. 1997 Heft 9 (1997), p. 423 - 432
13 references
published: Oct 11, 1997
DOI: 10.1127/njmm/1997/1997/423
ArtNo. ESP156199709002, Price: 29.00 €
Abstract
Kuzelite occurs in carbonaceous xenolithes in a Tertiary basalt of Heldburger Gangschar in the Zeilberg quarry, Marolsweisach, northern Bavaria - Germany. It is associated with ettringite, calcite, tobermorite, apophyllite, gyrolite portlandite and natrolite. Only small amounts of the new mineral were collected. Kuzelite, with the ideal formula [Ca4Al2(OH)12][SO4) . 6H2O] crystallizes in R3,R3 space group with a = 5.76(1) and c = 53.66(2) Å with Z = 3. Measured density is 1.99(5), calculated density = 2.014 g/cm³. The strongest lines in X-ray powder patterns are d(006) = 8.972, d(0.0.12) = 4.472 and d(0.0.20) = 2.363. The platy mineral is transparent to white, with ε = 1.485(5) and ω = 1.504 (5). The optical sign is 1(-). Spectroscopic data proved no incorporation of carbonate in the interlayer.
Keywords
Kuzelite • new mineral • hydrocalumite group • Maroldsweisach/Germany