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Improving Mindat.orgSteacyite page - crystallographic data incorrect

15th May 2026 07:00 UTCHerwig Pelckmans OP


Right now is mentioned:
Morphology: Elongated along [001] and showing only the forms {100} and {001}.
(this was incorrectly copied from the HOM)

Suggested correction:
Morphology: Elongated along [001] and showing mainly the forms {100} and {001}, and sometimes {110} and/or {101} (Pelckmans, 2026, pers. comm.).   

15th May 2026 15:06 UTCKnut Edvard Larsen 🌟 Manager

Morphology: Elongated along [001] and showing only the forms {100} and {001}.  
Yes, the word "only" is unprecise and will be edited.  
It is  refering to the most common prismatic habit, which may occasionally also display the form {110}. The more rare dipyramidal habit however are showing {100}, {001) and {101}.

see  f.ex. 
Horváth, L.; Gault, R.A.; Pfenninger-Horváth, E.; Poirier, G. (2019) Mont Saint-Hilaire: History, Geology, Mineralogy - Special Publication No. 14. The Canadian Mineralogist. 634 pp.  


 
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To cite: Ralph, J., Von Bargen, D., Martynov, P., Zhang, J., Que, X., Prabhu, A., Morrison, S. M., Li, W., Chen, W., & Ma, X. (2025). Mindat.org: The open access mineralogy database to accelerate data-intensive geoscience research. American Mineralogist, 110(6), 833–844. doi:10.2138/am-2024-9486.
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