Lemon Chrysoprase is a nickel stained, silicified magnesite, commonly found in association with Chrysoprase. It is also known as Citron Chrysoprase.
Lemon Chrysoprase owes its unusual colours to nickel salts, which are leached from ultramafic rocks by hot, percolating ground waters. This silica rich solution is absorbed into the softer, porous magnesite which forms within the cracks and voids of the nickel rich laterite host rock. Colours range from pale yellows through to vibrant lime greens.
Lemon Chrysoprase can look similar in colour and appearance to Gaspeite, another nickel stained magnesite based carbonate mineral which forms part of an end series with Lemon Chrysoprase.
Lemon Chrysoprase is most often found as nodules ranging in size from an orange to a small car. These nodules can have either a smooth, rounded surface or a skin similar in appearance to dried and cracked mud. The nodules can also have a skin of Chrysoprase. Vein or plate material is less common and usually has a higher silica content which makes it harder.
Most Lemon Chrysoprase is sourced from the Goldfields region around Kalgoorlie in Western Australia.
Lemon Chrysoprase is most commonly used for carvings, ornaments and jewellery items.