Full details of each lot are displayed, except the lot number, estimate and price. You must be a subscriber to view lot numbers, estimates and prices.
Opal Pineapple: pseudomorph of extinct mineral known as ikaite,…
Sale Title:
Auction House:
Auction Location:
Melbourne
Date:
6-Nov-2014
Lot No.
***
Description:
Opal Pineapple: pseudomorph of extinct mineral known as ikaite, about 350g. Rare - only occur at White Cliffs, NSW. [The crystal-like shape is known as an Opal Pineapple. In fact they are neither crystals nor pineapples. Opal is an amorphous mineral, meaning they have no crystal form. Opal pineapples are Pseudomorphs, which occur when one mineral replaces another making a cast of the original mineral. Opal has replaced the original mineral Ikaite, which only crystallises in near freezing conditions. This suggests that these pineapples had their beginnings in an ice age]
Estimate:
***
Price:
***
Category:
Unclassified