HIMALAYAN QUARTZ RUTILE CHLORITE
A gorgeous Himalayan Quartz Rutile Chlorite Crystal, packed with Rutile inclusions and some Chlorite. A great piece that is small enough to carry with you in a purse or pocket. This specimen has been mounted on a perspex pad for enhanced display. our photos don’t do justice to this specimen, it is differcult to photo graph inclusions.
Dhading District, Nepal, Himalayas.
7cm x 2.1cm x 2cm, 38g.
See our Himalayan Quartz & Kyanite section for other similar pieces. Many more in store.
Quartz is the most common mineral found on the surface of the Earth. A significant component of many igneous, metamorphic and sedimentary rocks. This natural form of silicon dioxide is found in an impressive range of varieties and colours. There are many names for different varieties, Cryptocrystalline varieties of quartz are listed separately under chalcedony and include agate.
Chlorite (Fe, Mg, Al)6(Si, Al)4O10(OH)8.
Chlorite is a general name for several minerals that are difficult to distinguish by ordinary methods. These minerals are all apart of the Chlorite Group of minerals. The chlorites are often, but not always considered a subset of the larger silicate group, The clays. There are several different minerals that are apart of the chlorite group of minerals. The above formula is only a generalisation of the more common members of this group.
For practical reasons most of the chlorites are considered here as a single mineral, chlorite. Chlorites are generally green and crystallize in the monoclinic symmetry system. They all have a basal cleavage due to their stacked structure. Chlorites typically form flaky microscopic crystals and it is this reason that they are sometimes included in the clay group of minerals. However chlorites also form large individual tabular to platy crystals that are unlike most of the other clay minerals.
The chlorite inclusions in clear quartz are particularly interesting when they form as a coating on a crystal early in its development. Because if the crystal later grows larger, ie. out and around the chlorite coating, the effect will be to produce a phantom crystal. Many times the interior “crystal” is indistinct or ghostly and thus the name phantom.
The local experts tell me that the Chlorite acts like an acid and eats away at the quartz whist it is forming. This is why many Chlorite formations with Quartz appear to be eroded.