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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. 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. Mindat.org - Mines, Minerals and MoreBournonite is a complex sulfide mineral of lead, antimony and copper, often found in Cornwall, England. It has a distinctive cogwheel shape and metallic luster. Learn … Introduction. Mindat.org is the world’s leading authority on minerals and their localities, deposits, and mines worldwide. Mindat.org’s mission is to advance the world’s understanding of minerals. Mindat.org has been collecting, organising, and sharing mineral information since October 2000. It is now an essential resource used daily ...

mindat.orgmindat.orgCo-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 …

mindat.orgMindat.org is a dynamic database, with new information, localities and photographs continuously being added, verified, and updated by thousands of members across …

18 Jan 2024 ... 1.68% of all Gold deposits have Arsenic. * in exploitable quantities, based on associations listed on mindat.org. Companies producing GoldHide.mindat.orgEudialyte 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 … Search for Minerals in a Country/Top Level Administrative Region. Enter a mineral name (eg Almandine ), and select a country/top level administrative region and this search will find all localities within the region containing that mineral. Mineral Name: Region: - Please Select - 162173 Ryugu Aegean Sea Plate Afghanistan African Plate Akrotiri ... 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 ...

Calcite-Rhodochrosite Series. A very common and widespread mineral with highly variable forms and colours. Calcite is best recognized by its relatively low Mohs hardness (3) and its high reactivity with even weak acids, such as vinegar, plus its prominent rhombohedral cleavage in most varieties. NOTE on the unit cell and the Miller indices ...

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."

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 …Covellite is a rare copper sulfide mineral with a striking iridescent blue color. It forms in high-sulfidation environments, often associated with other copper minerals. Learn more about its properties, occurrence, and uses at mindat.org, the largest and most comprehensive mineral database online. A rhodian variety of Gold. Gold containing 34 to 43 weight percent Rh has been reported from Columbia & Mexico, but not confirmed. Silver- and mercury-bearing Gold. A variety of gold, containing up to 31 weight percent of silver and up to 15 weight percent of mercury. Compare also Unnamed (Ag-Au Amalgam). Using the mindat catalogue is very easy. All you have to do is to register on mindat.org, log in and click on your 'Home Page' button. Then select the 'My Catalogue' tab as below: This will open up the page for Your Collection. Add a new entry by clicking the button labelled in yellow on the screen grab below: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 …In today’s digital age, where convenience and efficiency reign supreme, it comes as no surprise that more and more members of The Church of Jesus Christ of Latter-day Saints are op...Descloizite is a rare zinc and vanadium mineral that forms brown to black crystals with various habits. It is often associated with other secondary minerals in oxidized zones of base metal deposits. Learn more about its properties, occurrence, and uses at Mindat.org, the largest and most comprehensive mineral database online.

Chromite is a versatile mineral that belongs to several series of iron and chromium oxides. Learn about its properties, occurrences, associations, and uses at Mindat.org, the largest and most comprehensive mineral database and reference website on the internet. Search Minerals By Chemistry. To use the chemical search form click on an element to select it (matches MUST INCLUDE this element.) It will turn yellow. Click again to mark it as excluded (matches MUST NOT INCLUDE it), it turns black. Noble gasses and elements not found in nature are excluded. When finished hit one of the search buttons. An unnecessary name for a manganoan variety of siderite, with up to 40% MnCO3 [Clark, 1993 - "Hey's Mineral Index"]. Obsolete name for a Mg-bearing variety of siderite with the Fe:Mg atomic ratio ranging from 70:30 to 50:50. Originally reported from Thurnberg Mt., Flachau, Radstadt, Salzburg, Austria.Roselite Group. Name: Named in 1824 by Armand Levy in honor of German mineralogist Gustav Rose [March 18, 1798 Berlin, Germany – July 15, 1873 Berlin, Germany], Professor of Mineralogy, University of Berlin. Type Locality: ⓘ Rappold Mine, Neustädtel, Schneeberg, Erzgebirgskreis, Saxony, Germany. Dimorph of:About Bustamite Hide. Name re-used in 1922 by Esper Signius Larsen, Jr. and Earl Victor Shannon for a new mineral somewhat chemically similar to the original material, but which had proved to be a mixture. The original bustamite from Real de Minas, Fetela (Tetela de Ocampo), Jonotla, Mexico was a mixture of rhodonite and johannsenite.

Mindat.org is an outreach program of the Hudson Institute of Mineralogy, a 501 (c) (3) not-for-profit organization based in the United States as an entity dedicated to the discovery, study, and preservation of mineral species and their history, and to increasing public awareness and appreciation of the mineral kingdom through outreach and ... 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.

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.About Nuummite Hide. Name: The name Nuummite which means "derived from Nuuk" in Greenlandic was given to the amphibolitic rock type which was found by the geologist Peter W. Uitterdijk Appel in 1982, near Nuuk (Godthåb). Appel considered first the name nuukite, but renamed it to Nuummite, which in Greenlandish …A dark green chromium-rich gem variety of beryl. Raspberyl. A marketing term for a raspberry-red beryl, also used for some raspberry-red pezzottaite (cesium beryl) crystals from Madagascar. Note that there is no relationship between the raspberry-red colour and the cesium content, i.e. a raspberry-red beryl can be...Complete, up-to-date, mineral database containing 4,714 mineral species descriptions and comprehensive picture library of images. These data are …版权所有© mindat.org1993年至2024年，除了规定的地方。 Mindat.org全赖于全球数千个以上成员和支持者们的参与。 隐私政策 ...Name: From the Greek κύλιυδροσ, a roll, in allusion to the typical cylindrical habit of the mineral. Type Locality: ⓘ Santa Cruz Mine, Poopó, Poopó Province, Oruro, Bolivia. Cylindrite Group. There is a relation between the cylindrical morphology and crystal structure. The latter is composite and characterizes in incommensurate ...Opal adalah mineral silika amorf yang memiliki warna-warni yang berubah-ubah karena difraksi cahaya. Opal memiliki berbagai varietas, seperti Opal-AG, Opal-AN, Opal-CT, dan Opal-C, yang berbeda dalam struktur dan komposisi kimianya. Situs mindat.org menyediakan informasi lengkap dan terpercaya tentang opal, …Mindat.org - Mines, Minerals and MoreSpecific Gravity: 5.246 - 5.505. Crystal System: Monoclinic. Member of: Coronadite Group > Hollandite Supergroup. Name: Named in 1905 by Waldemar Lindgren in recognition of Francisco Vasquez de Coronado [1510 Salamanca, Spain - September 22, 1554, Mexico City, Mexico], a Spanish conquistador and explorer of the American southwest. Type …

View from mars rover ... NASA's Mars Perseverance rover acquired this image using its Right Mastcam-Z camera. Mastcam-Z is a pair of cameras located high on the ...

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About Grandidierite Hide. Named by A. Lacroix in 1902 in honor of Alfred Grandidier (20 December 1836, Paris, France - 13 September 1912, Paris, France), French explorer and naturalist. He visited Madagascar three times between … Welcome 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: potd. 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 database. Mindat.org - Mines, Minerals and MoreRegistration is required to post to the messageboard (text and photos), but you DO NOT have to request activation to post messages and photos to the Discussions ...The most common simple iron oxide mineral. A weathering product of numerous iron-bearing minerals. Goethite may crystallize from a precursor - a not approved species called 'proto-goethite'. May also form due to mineralization of lichen ( Parmelia conspersa) thalli on metamorphics (e.g., gneisses), granites, feldspars.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.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.Name: For the elements calcium, vanadium, and silicon in the composition. Type Locality: ⓘ Owyhee Dam, Lake Owyhee State Park, Malheur County, Oregon, USA. Dimorph of: Pentagonite. Ishida et al. (2009) suggest that cavansite is a low-temperature form and pentagonite a high-temperature form. To distinguish pentagonite and cavansite one can ...

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.Canada : Canada is divided into ten provinces and three territories. Each of these entities may have different types of subdivision, used for various purposes.mindat.org 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." Instagram:https://instagram. taylor swift youth shirtman of steel memetwoplustwo las vegas lifestyletaylor swift sao paulo tickets Specific Gravity: 3.22. Crystal System: Monoclinic. Name: Named after Heikki Allen Väyrynen (1888-1956), professor of mineralogy, Technical High School, Helsinki (Finland). Type Locality: ⓘ Viitaniemi pegmatite, Eräjärvi area, Orivesi, Pirkanmaa, Finland. The manganese-beryllium-phosphate väyrynenite was first recognized in 1939 as a ...Biagioni et al. (2020) delineate the series of Ag-poor tetrahedrites, where Ag < 3 apfu, belong to the tetrahedrite series. Although originally considered a series between tetrahedrite-(Fe) and tetrahedrite-(Zn), the two most common end-members, there are now (as of November 2023) seven IMA-recognized end-members.Hence, the former … bosch silence plus 50 dba manual pdfmytotalrewards.timken.com login 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.A greasy, wax-yellow to reddish-brown weakly radioactive mineral, most commonly found in metamorphic rocks and pegmatites, associated with allanite, cerite, tysonite, fluorite, and tornebohmite. The group members may be part of the Bastnäsite-Vaterite Homologous Series. regal cinema cost Sphalerite Group. Sphalerite, also known as blende or zinc blende, is the major ore of zinc. When pure (with little or no iron) it forms clear to white crystals (known as Cleiophane ). Yellow to orange sphalerite is often called "golden sphalerite." Red shades of sphalerite are known as Ruby Blende or Ruby Jack. a trade name for any white feldspar with a blue schiller. Commonly microcline rarely orthoclase, and the plagioclase series. contains albite with its variety peristerite has moonstone's blue schiller Antiperthite and anorthoclase may show schiller similar to moonstone and have been lumped together in moonstone. Mindat Fellows 2024. The Mindat Fellows program is a way for you to help ensure the long-term survival of mindat.org and for you to proudly show others your support to help encouage others to do the same. Fellows will be receiving benefits such as advanced priority access to new features, priority support and special VIP events.