On the nature of tincalconite
Document Type
Article
Publication Date
1-1-2002
Abstract
An examination of synthetic crystalline material by single crystal X-ray diffractometry reveals a unit-cell dimension that was previously ascribed to tincalconite. However, the best fit to the reflection data obtained at 291(2) K is obtained with composition assigned to tincalconite from an earlier crystallographic study. Additionally, our model fits best with non-crystallographic measurements and agrees with the analysis from a more recent low temperature crystallographic analysis. Tincalconite is best formulated as Na6[B4O5(OH)4)]3-8 H2O. It is trigonal, R32, a = 11.1402 (11), c = 21.207 (3) Å, Z = 3, R = 0.020 for 512 F0 > 4σ (Fo) and 0.021 for all 529 data at 291(2) K.
Publication Title
American Mineralogist
Recommended Citation
Luck, R.,
&
Wang, G.
(2002).
On the nature of tincalconite.
American Mineralogist,
87(2-3), 350-354.
http://doi.org/10.2138/am-2002-2-319
Retrieved from: https://digitalcommons.mtu.edu/michigantech-p/13761