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While externally similar shapes, these two minerals are very different inside.
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Hexahydrite from
Tilly Foster Iron Mine, Town of Southeast, Putnam County, New York, USA


Locality type:Mine
Classification
Species:Hexahydrite
Formula:Mg(H2O)6(SO4)
Comments:Found in micro groups of fibrous white masses
Habit:fibrous masses
Colour:white
Confirmation
Validity:Believed Valid
Data
Mineral Data:Click here to view Hexahydrite data
Locality Data:Click here to view Tilly Foster Iron Mine, Town of Southeast, Putnam County, New York, USA
Data Identifiers
Mindat Occurrence Record ID:102085
Long-form Identifier:1:3:102085:4
GUID (UUID V4):0
Nearest other occurrences of Hexahydrite
88.4km (54.9 miles) ⓘSterling Mine, Sterling Hill, Ogdensburg, Sussex County, New Jersey, USA
References
Januzzi, 1989
Januzzi, Ron E., Seaman, David M. (1976) Mineral Localities of Connecticut and Southeastern New York State and Pegmatite Minerals of the World. The Mineralogical Press, Danbury, Connecticut, USA.
 
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