Aplowite Explained

Category:	Rozenite
Formula:	(Co,Mn,Ni)SO4 · 4H2O
Imasymbol:	Apw^[1]
System:	monoclinic
Class:	Prismatic - 2/m
Color:	bright pink, light pink in light
Toughness:	~3 -->
Mohs:	3
Luster:	Vitreous (Glassy)
Streak:	white
Diaphaneity:	transparent
Density:	2.33 g/cm3 (Measured)2.36 g/cm3 (Calculated)
Opticalprop:	Biaxial (–). α = 1.528 β = n.d. γ = 1.536
2V:	n.d.
Solubility:	soluble in water
References:	^[2]

Aplowite is a very rare mineral with the formula CoSO₄•4H₂O, a naturally occurring cobalt(II) sulfate tetrahydrate. It is the lower hydrate when compared to bieberite (heptahydrate) and moorhouseite (hexahydrate), and a higher hydrate when compared to cobaltkieserite (monohydrate). It occurs together with moorhouseite within efflorescences.^{[2] [3]}

Notes and References

1. Warr. L.N.. 2021. IMA–CNMNC approved mineral symbols. Mineralogical Magazine. 85. 3. 291–320. 10.1180/mgm.2021.43. 2021MinM...85..291W. 235729616. free.
2. Jambor, J. L., and Boyle, R. W., 1984. Moorhouseite and aplowite, new cobalt minerals from Walton, Nova Scotia. Canadian Mineralogist 8, pp. 166-171
3. Web site: Aplowite: Aplowite mineral information and data . Mindat.org . 2016-03-03.