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Taranakite : (K,NH4)Al3(PO4)3OH·9H2O, Parwanite : (Na,K)(Mg,Ca)4Al8(PO4)8(CO3)(OH)7·30H2O |
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Parwan lava caves, Bacchus Marsh, Victoria, Australia
Steve Sorrell specimen and photo. Field of view is 4mm across. The Parwanite is pearly aggregate in the top right of the image. |
| © crocoite.com | Photo ID: 26643 View Count: 761 |
Taranakite : (K,NH4)Al3(PO4)3OH·9H2O |
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Chrystalls Beach, Otago, South Island, New Zealand
Coming from a rock-stack used by sea-birds, this cross-section of a rock, probably basalt, shows alteration to taranakite caused by the action of guano. The compact white layer at the top is the taranakite. Field of view: 12mm. |
| © Judy Rowe | Photo ID: 191066 View Count: 80 |