CHONDRODITE CALCITE DIOPSIDE
Chondrodite Calcite Diopside called the Galaxy Rock. This large specimen is from a closed location Long Lake Canada and hard to come by. Pics taken with Short Wave UV or UVC lamp. Also this specimen exhibits BIP Brief Intense Fluorescence shown in a pic with a Long Wave UV or UVA laser. We found this one in some old stock. The Yellow is Chondrodite, The Blue is Diopside and Pink is Calcite.
Showing all the colours of the Universe in this one spectacular rock. A beautiful mineral specimen with outstanding colour under short wave UV light. The gift for the mineral collector with everything else! You will need a Short Wave UV light to view these spectacular colours in the dark. Available here.
Long Lake, Ontario, Canada.
16.5cm x 7.3cm x 7.8cm, 875g.
Magnesium Iron Silicate Fluoride Hydroxide
((Mg, Fe)2SiO4)2 – Mg(F, OH)2.
Chondrodite is the most common and most well known member of the Humite Group of minerals. The silicate layers have the same structure as Olivine. The oxide layers have the same structure as Brucite. In the case of Chondrodite, there are two consecutive Olivine layers that alternate between each Brucite layer.
Chondrodite is not a common mineral. Found in hydrothermal deposits and contact and regionally metamorphosed Dolomitic limestones. Most notably skarn deposits and in some Serpentine rocks. Crystals when found are very complex with many competing forms adding many different and seemingly unrelated faces. Most often the individual crystals appear rounded or granular.
Calcium Magnesium Silicate
Diopside is an important rock forming mineral in metamorphic igneous rocks, also found in meteorites. Diopside is a part of an important solid solution series of the pyroxene group. The series includes the minerals hedenbergite, CaFeSi2 O6, and augite, (Ca, Na)(Fe, Mg, Al)(Al, Si)2 O6. A series occurs when ions (in this case iron and magnesium) can freely substitute between each other. Diopside is the magnesium rich end member of the series. The Diopside hedenbergite series is analogous to the amphiobole, tremolite actinolite series.
Diopside has several varieties, including a chromium-rich gem variety called chrome Diopside. A green variety “cat’s eye” contains minute inclusions of Rutile. The Rutile reflects light to produce a lively linear luminescence within the crystal. Another dark variety with Rutile needles aligned so as to produce a 4 ray star, hence the name star Diopside. Ordinary Diopside is typically white or green and can have a nice glassy luster. Chrome Diopside is much brighter. Many specimens of ordinary Diopside are also cut for gemstones. Mineral specimens of Diopside can be very striking in appearance, and of interest to mineral collectors.