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Portlandite


Portlandite is simple calcium hydroxide. Tilley (1933) named the mineral portlandite since the artificial compound forms by hydration of Portland cement. Although portlandite has a modest solubility in water, it is sufficiently stable to store in a humid climate. The mineral has hexagonal symmetry and is a member of the brucite group. It forms soft foliated masses, here stark white. This is rare material. This specimen carries a Carter Rich label.

Price: $100

Item code: MS0904

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Portlandite