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Jean-Marc's Home Page ... I have collected minerals since I was fifteen. Ten years later, I started collecting micro-minerals. It was the very beginning of ...18 Jan 2024 ... 1.68% of all Gold deposits have Arsenic. * in exploitable quantities, based on associations listed on mindat.org. Companies producing GoldHide. There are currently 6,017 approved mineral species listed on mindat.org. What is a mineral? (for the longer answer, read this article) The IMA ( International Mineralogical Association) defined it as: "A mineral is an element or a chemical compound that is normally crystalline and that has been formed as a result of geological processes." Chemistry of Staurolite Hide. Mindat Formula: Fe2+2Al9Si4O23(OH) The formula can also be considered as alternating layers of kyanite and oxide, and so can be recast as: 4Al 2 O [SiO 4]. AlFe 2+2 O 4 H. Elements listed: Al, Fe, H, O, Si - …

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An apatite with 3.18% rare earth elements (REE) and 1.33% Ce2O3 from the Kola Peninsula. Originally reported from Kola Peninsula, Murmanskaja Oblast', Northern Region, Russia. Collophane. A name used for the massive, cryptocrystalline, colloidal (amorphous) varieties of Carbonate-rich Fluorapatite or Carbonate-rich Hydroxylapatite, such as ...

Pyromorphite is a mineral species composed of lead, chlorine, and phosphate. It forms striking hexagonal crystals with various colors, such as green, yellow, brown, or orange. Learn more about its properties, occurrence, and uses at Mindat.org, the largest mineral database and reference website on the internet.Occurs predominantly in ultrabasic igneous rocks. Pure end-member pyrope is colorless! (but rare). Optical anisotropy may be present, caused by strain-induced birefringence, in relation to occurrence of more than a single (cubic) phase (Antao, 2021). Visit gemdat.org for gemological information about Pyrope.Orthorhombic. Member of: Tuhualite Group. Name: Named after Jack Zektzer (1936 - ), mineral collector of Seattle, Washington, USA, who presented the material for study. Type Locality: ⓘ Washington Pass, Golden Horn Batholith, Okanogan County, Washington, USA. Tuhualite Group. Visit gemdat.org for gemological information about Zektzerite.Orthoclase: Mineral information, data and localities. - mindat.orgOrthoclase is a common potassium feldspar that forms igneous and metamorphic rocks. It has a monoclinic or triclinic crystal system and a hardness of 6. It shows perfect cleavage and a vitreous to pearly luster. Learn more about its properties, occurrence and …

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“As Christians, we believe that we have been given responsibility over every little thing on this planet.” When evangelical environmentalists talk about climate change, they don’t ... Steel-grey to black in crystals and massively crystalline ores, dull to bright "rust-red" in earthy, compact, fine-grained material. Originally named about 300-325 BCE by Theophrastus from the Greek, "αιματίτις λίθος" ("aematitis lithos") for "blood stone". It is possibly the first mineral ever named ending with a "-ite" suffix. Hemimorphite is a valid mineral species with hemimorphic crystals and a chemical formula of Zn4Si2O7(OH)2·H2O. It occurs in various colors and forms, often associated with other minerals such as rosasite, calcite and plattnerite. Mindat.org is the largest and most comprehensive online database of minerals, mines and localities, where you can find detailed information, photos and references ... Name in honor of Arie Poldervaart (6 July 1918, Bandung, Indonesia – 28 October 1964, Manhattan, New York, USA), petrologist at Columbia University, New York. He made important contributions to the understanding of the South African Karoo dolerites and Archean rocks in the Kakamas area of northwest Cape Province.Link to MinDat.org Location Data. Name Origin: Named after its chemical composition. Synonym: Chrome iron ore : Chromic iron : Ferrichromite - magnetic, …Co-Type Localities: ⓘ Jáchymov, Karlovy Vary District, Karlovy Vary Region, Czech Republic. ⓘ Breitenbrunn, Breitenbrunn, Erzgebirgskreis, Saxony, Germany. Fluorite Group. Fluorite is found as a common gangue mineral in hydrothermal veins, especially those containing lead and zinc minerals. It is also found in some …

As you probably know, I created mindat.org. It started as a personal PC database that I wrote from scratch - work I started on Christmas Day 1993. The first ...Garnet Supergroup. Name: Named Carchedonius Garamanticus = Carthaginian or Garamantic Carbuncle in 77-79 by Pliny the Elder. Earlier named ΑνθραϪέ by Tyrtamus, commonly known by his honorary name, Theophrastus, possibly about 325-300 BCE, but seemingly a name also used for ruby spinel and red-pink …Mindat.org is an outreach project of the Hudson Institute of Mineralogy, a 501(c)(3) not-for-profit organization. Copyright © mindat.org and the Hudson ...Orthorhombic. Member of: Tuhualite Group. Name: Named after Jack Zektzer (1936 - ), mineral collector of Seattle, Washington, USA, who presented the material for study. Type Locality: ⓘ Washington Pass, Golden Horn Batholith, Okanogan County, Washington, USA. Tuhualite Group. Visit gemdat.org for gemological information about Zektzerite.Aragonite is a fascinating mineral that can form in various shapes, colors and patterns. It is also a polymorph of calcite and a main component of ammolite, a rare and colorful gemstone. Learn more about aragonite's properties, occurrence and uses at mindat.org, the largest mineral database and reference website on the …Mimetite is a lead arsenate chloride mineral that often resembles pyromorphite. It forms prismatic, hexagonal or acicular crystals with various colors and lusters. Mindat.org provides detailed information about mimetite's formula, structure, properties, occurrences, photos and more.

mindat.orgWelcome to the new photo search tool on mindat.org. Enter a normal text string in the box above to search photos. Examples: search for a mineral: cuprite. search for a locality/region: from new jersey. search for a mineral at a locality: dioptase from tsumeb. search your own photos: my cuprite from namibia. list photos of the day: …

mindat.orgA variety of Muscovite Illite is a very common mica and clay mineral, typically found as extremely fine-grained masses of grayish-white to silvery-gray, sometimes greenish-gray, material. The literature on "illite" is very large as it is a widespread component of many sediments, especially marine; despite this it is poorly defined …Amphibole is a group of minerals with complex chemical compositions and diverse physical properties. They are important rock-forming minerals in many igneous and metamorphic rocks. Learn more about the amphibole supergroup, its classification, crystal structure, and occurrence at mindat.org, the world's largest mineral … Type Locality: ⓘ Tsumeb Mine (Ongopolo Mine), Tsumeb, Oshikoto Region, Namibia. Adelite-Descloizite Group. Conichalcite-Duftite Series. Duftite-Mottramite Series. Duftite-alpha is possibly a variety of Duftite isostructural with descloizite (for literature see duftite). Modern studies needed. Calcite Group. Often confused with Cobaltoan Calcite or Cobaltoan Dolomite. NOTE: This is the correct and approved IMA spelling ("sphaerocobaltite" is incorrect). Palache, Berman, and Frondel (1954) list this species as "cobaltocalite" and a confusion is common between the former "cobaltocalcite" and "cobaltoan calcite".Mindat.org - Mines, Minerals and More

Mindat.org is the world's leading website about minerals and where they come from. It provides detailed information, data and localities for thousands of mineral species, as well as a comprehensive picture library and a learning center. Find out more about mindat.org and its mineral database by visiting the url below.

Mindat.org - Mines, Minerals and More

mindat.orgCornetite is a rare copper phosphate mineral with a striking blue color and a complex crystal structure. Learn more about its properties, occurrence, and history at Mindat.org, the largest and most comprehensive mineral database and reference website on the internet.mindat.orgAcanthite is the low-temperature modification of silver sulphide. All natural silver sulphide specimens at room temperatures are acanthite. The structure of Argentite, the high-temperature cubic (isometric) form cannot be quenched. At atmospheric pressure, argentite is stable above 177°C and acanthite is stable below 177°C.The purpose of the preamble is the outline the reasons behind the writing of the U.S. Constitution and the goals of the document. Constitutioncenter.org identifies the purpose of t...Galena is a common and important lead ore mineral that has a metallic luster and cubic crystals. Learn more about its properties, occurrence, associations, and uses at mindat.org, the largest mineral database and reference website on the internet.According to Education.org, a good teacher is someone who has an engaging personality, good communication skills and a passion for what they do. However there are many different op... Eudialyte is a colorful and rare mineral that belongs to the Eudialyte Group. It is mainly found in alkaline and peralkaline rocks, and often contains rare-earth elements and zirconium. Learn more about its chemical formula, crystal structure, physical properties, and localities at mindat.org, the largest mineral database and reference website on the internet. Mindat.org has been the world's best mineral website for 21 years. Learn how to use it and find some of the hidden power features in this very first …

JW.org is a website that serves as the online home for Jehovah’s Witnesses. It offers a wide range of features and resources designed to provide users with valuable information abo...Name: From the Greek αξίνα ("axina") for "axe", in allusion to the common habit of its crystals. Synonym: A synonym of Axinite Group. Localities listed here are where only 'axinite' is given as a reference. Most, but not all, 'axinite' is axinite- (Fe), i.e., the Fe-dominant member within the Axinite Group.Usually found as matte-black powdery to fibrous crusts, sometimes in botryoidal aggregates or columnar, more rarely as druzes of small prismatic to tabular, dark grey metallic crystals. May be confused with some manganese oxides such as todorokite (fibrous variants) and manganite (tabular crystals). NOTE: No valid pyrolusite dendrites are known.JW.org is a website that serves as the online home for Jehovah’s Witnesses. It offers a wide range of features and resources designed to provide users with valuable information abo...Instagram:https://instagram. tayo ricci lpsgnj lottery scratch ticketsautentico 2 textbook answersoppenheimer showtimes near cinemark north hills and xd Galena is a common and important lead ore mineral that has a metallic luster and cubic crystals. Learn more about its properties, occurrence, associations, and uses at mindat.org, the largest mineral database and reference website on the internet.Named after Matthias Joseph Anker (1771-1843), Styrian (Austria) mineralogist. Originally considered to be Ca (Mg,Fe) (CO 3) 2 (eg. Hey, 1955, with >10% FeCO 3) with no specific requirement for Fe>Mg, before being redefined as strictly having Fe>Mg, i.e. with the dominant endmember CaFe (CO 3) 2. It was commonly given … high tide dispensary cherry grove sctaylor swift new tour dates 2024 Erionite was first found at the Durkee Fire Opal Mine, Swayze Creek, Durkee, Baker Co., Oregon (Tschernich, 1992). In modern nomenclature, the original erionite was erionite-Na, but potassium was nearly equal to sodium. This name now refers to a group of related minerals. Erionite minerals have the average chemical formula Ca3K2Na2 … t shirt taylor Dark or black iron rich (10% of the magnesium site) dolomite found as euhedral crystals embedded in gypsum-rich marls, originally described from Teruel, Aragón, Spain. The name has been used in recent times for similar dolomite crystals of any colour,... Zinc-bearing Dolomite. A variety of dolomite containing Zinc.Chalcocite is a copper sulfide mineral with a hexagonal crystal structure and a metallic luster. It is a valuable ore of copper and a source of various copper minerals. Learn more about its properties, occurrence and uses at mindat.org, the largest mineral database and reference website on the internet.