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Povondraite

Povondraite is a rare silicate mineral of the tourmaline group with the formula: us 3 si 6 O 18 3 oclock It is dark brown or nearly black opaque mineral with a resinous to glare. He kristallizuetsya in the trigonal crystal system as Equant, disto ...

Pyrargyrite

Pyrargyrite is a sulfosalt mineral consisting of silver sulfantimonide, AG 3 SBS 3. Known also as dark red silver ore or ruby silver, it is an important source of metal. It is closely related to, and isomorphous with, the corresponding sulfarseni ...

Segnitite

Segnitite, named after the Australian mineralogist, gemologist and Petrology Edgar Ralph Segnit, lead iron arsenate minerals. The mineral is named for E. R. Segnit for his contributions to Australian Mineralogy. Segnitite were first found in the ...

Stillwaterite

Palladium arsenide mineral Stillwaterite has the General formula PD 8 3. Stillwaterite were first discovered in the banded and upper zones of the Stillwater igneous complex in Montana, USA, and was reported in Lac-des-Iles area of Ontario, Canada ...

Zirsilite-(Ce)

Zirsilite is a very rare mineral of the eudialyte group, with the formula 12 3 to about 6 mn 3 ZR 3 NbSi 2 3 n 2 O. the original formula has been extended to show the existence of cyclic silica groups and the presence of silicon on the M4 site, t ...

Zussmanite

Zussmanite 13 14) is a hydrated iron silicate mineral. Zussmanite occurs as pale green crystals with perfect cleavage.

Trapiche emerald

Trapiche emerald is a rare variety of the gemstone emerald, is characterized by a six-pointed radial rays-spokes like the dark impurities. It is one of several types or Trapiche Trapiche-like minerals, which also include Trapiche ruby, sapphire, ...

Golden sheen sapphire

Gold glitter sapphire is a name that is known to be associated with Golden sapphire. It is usually metal Golden color from the translucent material is also possible. He has the same color, chemical properties and characteristics, like black sapph ...

Demantoid

Demantoid is the green gemstone variety of the mineral andradite, a member of the garnet group of minerals. Andradite-is a calcium and iron rich garnet. Chemical formula Cafe 3 2 3 replacing chromium as the cause of the demantoid green color. Fer ...

Grossular

Grossular is calcium-aluminium species of the garnet group of minerals. It has the chemical formula CA 3 al 2 3 but the calcium may be replaced by iron, aluminium, trivalent iron. The name grossular came from the Botanical name for gooseberry, vi ...

Tsavorite

Tsavorite or tsavolite is a kind of garnet-grossular, group species, a calcium-aluminium garnet with the formula CA 3 2 SI 3 O 12. Trace quantities of vanadium or chromium provide the green color. In 1967, British gem Prospector and geologist Cam ...

Hiddenite Gem Mines

Hiddenite, North Carolina, USA, is the center of the stones. Three major mines have been found Adams mine, naem, and the emerald mine. They are collectively known as the Hiddenite gem mines.

Precious coral

Precious coral or red coral, the common name of a genus of sea corals, corallium. The distinguishing characteristic of precious corals is their durable and intensely colored red or pink-orange skeleton, which is used for making jewelry.

Ametrine

Ametrine, also known as trystine or by its trade name as bolivianite, is a naturally occurring variety of quartz. It is a mixture of amethyst and citrine with zones of purple and yellow or orange. Almost all commercially available ametrine is min ...

Cape May diamonds

Cape may diamonds are quartz pebbles found on the beaches of the item, the Cape may, new Jersey. The pebbles are sometimes collected, cut and polished to resemble diamonds, then sold locally as Souvenirs. Cape may diamonds are usually collected f ...

Ceylonite

Ceylonite and pleonaste is dark blue or grey to black varieties of spinel. Ceylonite, named for the island of Ceylon, is ferrous spinel with Mg:Fe from 3:1 and 1:1, and practically no iron. Pleonaste is named from the Greek for abundance, for man ...

Magnesiocummingtonite

Magnesiocummingtonite is rich in magnesium endmember of the cummingtonite-grunerite series, hornblende group of minerals, in the following composition: 7-sea 22 2 8 hours. Magnesiocummingtonite is considered to be a good name magnesium-rich varie ...

Humite (mineral group)

Group HUMATE group of nesosilicates with the General formula N m 2. When dominated by magnesium we have a HUMATE subgroups: Of clinohumite, mg,Iron 9 SIC 4 f O 2. It, mg, Fe,ti 5 2 SIO 4 f,Oh,About 2. HUMATE, mg,iron 7 SIO 4 3 f 2. Norbergite, mg ...

Mariposite

Mariposite is a mineral which is a chromium-rich variety of mica, which imparts an attractive green color generally white dolomitic marble in which it is usually found. It was named for Mariposa, California, though it can be found in several plac ...

Pyroxene

In the pyroxene group of important rock-forming inosilicate minerals found in many igneous and metamorphic rocks. Pyroxenes have the General formula XY 2 x 6, where X represents calcium, sodium, iron or magnesium, more rarely zinc, manganese and ...

Coal Creek Serpentinite (Texas geology)

Coal Creek serpentinite small piece of rock, which consists of Precambrian-age metamorphic rocks, located near Llano TX the rise. The entire exposure can be performed while moving along the willow city loop and County road 310. The easiest way to ...

Spinel group

The spinels are any of a class of minerals in the General formulation of the AB 2 x 4, which crystallize in the cubic system, with the x anions are located in a cubic close-Packed lattice and the cations A and B occupying some or all octahedral a ...

Hypothetical zeolite

Hypothetical zeolites are combinatorial models of potential structures of the minerals known as zeolites. They are four-regular graphs with vertices representing tetrahedral atom and edges representing bridging oxygen atoms. In addition, ignoring ...

SSZ-13

SSZ-13 is an aluminosilicate zeolite mineral, having a 0.38 × 0.38 in Nm micropores. It belongs to the ABC-6 family of zeolites, as well as offretite, cancrinite, erionite and other associated minerals. In the framework of topology coincides with ...

ZSM-5

Type zsm-5, zeolite Socony Mobil–5), is an aluminosilicate zeolite belonging to the family of zeolites pentasil. Its chemical formula at n al N si 96–on 192 16h 2 O (0

Rare-earth mineral

Rare earth mineral contains one or more rare earth elements as major metal components. Rare earth minerals are usually found in Association with alkaline to peralkaline igneous complexes, in pegmatites associated with alkaline magmas and in or as ...

Sayrite

Sayrite 5 6 2 4) alteration product of uraninite behalf of the x-ray crystallographer David Sayre. Sayrite contains hydrogen, oxygen, Uranium, lead. It is mined in Shinkolobwe mine, Kambove district of the Katanga, the Democratic Republic of the ...

Krutovite

Krutovite is a cubic Nickel diarsenide with a chemical composition of Nias 2, and a sulfur content of 0.02-0.34 weight percent. Krutova consists of Nickel and arsenic with trace of small amounts of cobalt, iron, copper, sulphur and antimony.

Eudialyte group

Of the eudialyte group is a group of complex zircono trigonal - and, more rarely, titanosilicate minerals with the General formula 18− ring silicate group. The space group R usually 3 m or R -3 M but can be reduced to 3 R for the ordering of the ...

Calamine (mineral)

Calamine is a historic name for an ore of zinc. The name Calamine was derived from Lapis calaminaris, a Latin corruption of the Greek cadmia, the old name for zinc ores in General. The name of the Belgian city of Calamine and convenient to La cal ...

Giant sequoias near Kolpin

Two giant sequoias near the Kolpin in the parish of Demen in the district of Ludwigslust-Parchim in the German state of Mecklenburg-Vorpommern, is a monument of nature. They belong to the species commonly known as giant Sequoia and Wellingtonia a ...

Bergstein (Hohe Loog)

In the Bernstein-is a natural monument in the town of Neustadt an der WeinstraSe in the German state of Rhineland-Palatinate. It is designated as-Y-7316-202.

Bergstein (Weinbiet)

In the Bernstein-is a natural monument in the town of Neustadt an der WeinstraSe in the German state of Rhineland-Palatinate. It has room HG-7316-173. In Bernstein described as a rock band and lies at an altitude of approx. 1.161 m 354 feet in th ...

Encyclopedic dictionary

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