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Millington Quarry (Morris County Crushed Stone Co. Quarry; Tilcon Quarry), Bernards Township, Somerset Co., New Jersey, USA
© Frank A. Imbriacco III
|Colour:||White||Hardness:||4½ - 5|
|Name:||From the Greek for "away from" (ἀπό, apo) and "leaf" (φύλλον, phyllos), in allusion to the way it exfoliates upon heating.|
|Apophyllite-(KF), Apophyllite-(KOH), Apophyllite-(NaF)|
Visit gemdat.org for gemological information about Apophyllite. Currently in public beta-test.
Classification of Apophyllite
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Physical Properties of Apophyllite
|Hardness (Mohs):||4½ - 5|
|Density (measured):||2.33 - 2.37 g/cm3|
|Density (calculated):||2.37 g/cm3|
Crystallography of Apophyllite
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About Crystal AtlasThe mindat.org Crystal Atlas allows you to view a selection of crystal drawings of real and idealised crystal forms for this mineral and, in certain cases, 3d rotating crystal objects. The 3d models and HTML5 code are kindly provided by www.smorf.nl.
Edge Lines | Miller Indicies | Axes
Opaque | Translucent | Transparent
Along a-axis | Along b-axis | Along c-axis | Start rotation | Stop rotation
Optical Data of Apophyllite
|RI values:||nω = 1.535 nε = 1.537|
|Maximum Birefringence:||δ = 0.002|
Chart shows birefringence interference colour range (at 30µm thickness) and does not take into account mineral colouration.
Other Names for Apophyllite
|Health Warning:||No information on health risks for this material has been entered into the database. You should always treat mineral specimens with care.|
References for Apophyllite
Dunn, Pete J., R.C. Rouse & J.A. Norberg (1978), Hydroxyapophyllite, a new mineral and a redefinition of the apophyllite group: Am. Min.: 63: 196-202.
Internet Links for Apophyllite
|Specimens:||The following Apophyllite specimens are currently listed for sale on minfind.com.|
Localities for Apophyllite
The map shows a selection of localities that have latitude and longitude coordinates recorded. Click on the symbol to view information about a locality. The symbol next to localities in the list can be used to jump to that position on the map.