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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 ...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.Mindat.org is the world's leading website about minerals and where they come from.Back to good organic growthSTOCKHOLM, April 28, 2021 /PRNewswire/ --First quarterNet sales decreased by 2% to SEK 21,805 M (22,173), with good org... Back to good organic growth ST...BoysTown.org is a non-profit organization dedicated to providing life-changing support and services to at-risk youth. By donating to BoysTown.org, you are directly contributing to ...

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". Malachite is a green, very common secondary copper mineral with a widely variable habit. Typically it is found as crystalline aggregates or crusts, often banded in appearance, like agates. It is also often found as botryoidal clusters of radiating crystals, and as mammillary aggregates as well. Single crystals and clusters of distinguishable ... The calculation of the chemical composition is straight-forward. The molecular weight from the empirical formula divided by the sums of the atomic weights of each …

Oct 18, 2023 · Ralph Jolyon, mindat.org. This database contains worldwide information on minerals, mineral localities and other mineralogical information. In part supported by advertising, it stores data on 25,000 different minerals, varieties and synonyms listed with over 4,000 valid mineral and mineraloid names. The database is searchable by name ...

Adularia is a potassium-rich feldspar mineral that forms in low-temperature environments. It has a characteristic pearly or opalescent luster and can be found in many localities around the world. Learn more about its properties, occurrence and uses at mindat.org, the largest mineral database and reference website on the …About Plancheite Hide. Pale blue to deep blue, pale greenish blue. Named by A. Lacroix in 1908 in honor of François Gilbert Planche (4 June 1866, Tarare, Rhône-et-Loire, France - 24 May 1924, Gap, Hautes-Alpes, France), was an industrialist and a politician. He built dams and power plants, and founded several rail companies.WNYC.org, the online platform for New York City’s premier public radio station, is dedicated to providing high-quality journalism, in-depth reporting, and thought-provoking program...A 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 …

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"Apatite" is a field term for unidentified calcium phosphate members of the apatite group. Most "apatite" is fluorapatite, whereas hydroxylapatite is much less …

Quartz is one of the most common and diverse minerals on earth, and mindat.org is the largest and most comprehensive mineral database and reference website on the internet. Learn about the properties, varieties, localities, and photos of quartz from different sources and contexts. Explore the fascinating world of quartz with mindat.org. 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 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. Mount Malosa, Zomba, Southern Region, Malawi Dimensions: 4.8 cm x 3.7 cm x 2.8 cm A fine miniature combination from recent finds at Mount Malosa. A 3.1 cm, sharp, terminated, greenish-black aegirine crystal with mirror-luster prism faces is aesthetically set and angled between two sharp, blocky, well-formed, porcellaneous ivory-colored microcline crystals. This database contains worldwide information on minerals, mineral localities and other mineralogical information. In part supported by advertising, it …

Marialite-Na adalah mineral dari kelompok scapolite, yang memiliki kandungan natrium dan klorin yang tinggi. Mineral ini ditemukan di beberapa lokasi di dunia, termasuk Italia, Kanada, dan Tanzania. Informasi lebih lanjut tentang sifat dan data mineral Marialite-Na dapat dilihat di mindat.org, situs web terkemuka tentang …Type Locality: ⓘ Mount Somma, Somma-Vesuvius Complex, Naples, Campania, Italy. Polymorph of: Dmisteinbergite, Stöfflerite, Svyatoslavite. Feldspar Group. Ca-rich end member of the plagioclase (Albite-Anorthite Series). High- and low-temperature structural modifications exist.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 …La labradorite est un minéral qui peut présenter un effet optique iridescent (ou schiller) appelé labradorescence. Ce phénomène est dû à une structure lamellaire causée par un processus d'exsolution lié à un écart de miscibilité. L'effet est visible lorsque la séparation lamellaire est comprise entre 128 et 252 nm. Découvrez les propriétés, les données et …Tourmaline (synonymous with tourmaline group) comprises trigonal borosilicates of the cyclosilicate superclass. The nomenclature was revised by Henry et al. (2011). Notes on the general formula: - Additional cations are reported substituting in minor amounts for the principal cations of the G and D sites.Associated Minerals Based on Photo Data: 66 photos of Demantoid associated with Amphibole Supergroup. AB2C5( (Si,Al,Ti)8O22) (OH,F,Cl,O)2. 55 photos of Demantoid associated with Quartz. SiO2. 37 photos of Demantoid associated with Asbestos. 21 photos of Demantoid associated with Chrysotile. Mg3(Si2O5) (OH)4.Type Locality: ⓘ Rutile type locality, Horcajuelo de la Sierra, Community of Madrid, Spain. Polymorph of: Akaogiite, Anatase, Brookite, Riesite, UM1991-08-O:Ti, UM2000-41-O:Ti (TiO2-II) The most common member of the Rutile Group. Rutile is one of the five forms of titanium dioxide, TiO 2, found in nature.

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.orgmindat.orgCrystal System: Triclinic. Member of: Aenigmatite Group &gt Sapphirine Supergroup. Name: From the Greek αίνιγμα ("aenigma"), "a riddle", alluding to the enigmatic, uncertain chemical composition of the mineral. Named in 1865 by Breithaupt. Co-Type Localities:Coquimbite Group. Name: Named in 1841 by August Breithaupt for the type locality in the province of Coquimbo, Chile. Type Locality: ⓘ Coquimbo, Chile. Visually indistinguishable from aluminocoquimbite. Coquimbite and paracoquimbite are structurally homeotypic. Most (or all, if the species is truly coquimbite) samples carry Al, with variable ...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 …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 ...

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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.

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 …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 …Quartz is one of the most common and versatile minerals, with many varieties and optical properties. Learn more about its chemical composition, crystallography, physical properties, classification, origins, and localities at mindat.org, the largest mineral database and reference website on the internet.Mindat.org - Mines, Minerals and MoreZemannite is a rare tellurium oxide mineral that forms yellow to brown crystals with a tetragonal structure. It was first discovered in 1969 at the Moctezuma mine in Sonora, Mexico, and named after Austrian mineralogist Josef Zemann. Explore its physical and optical properties, chemical formula, crystallography, occurrence, and associations on …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.Chalcedony is a variety of quartz that forms in different colors and patterns. Learn more about this fascinating mineral, its properties, localities and history at mindat.org, the largest online database of minerals and geology.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 …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 … 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 ...

Canada : Canada is divided into ten provinces and three territories. Each of these entities may have different types of subdivision, used for various purposes. Specific Gravity: 6.98 - 7.01. Crystal System: Tetragonal. Member of: Rutile Group. Name: The mineral name is derived from the term “Cassiterides” which was applied to 'islands off the western coast of Europe' in pre-Roman times. The exact location of these 'islands' has been hotly debated over the years. 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. Instagram:https://instagram. selcuk sports neden acilmiyorwoody allen wikipediaticketmaster register taylor swiftsassie fogbank Mindat.org has an enormous resource of educational articles and other content, and whether you're a beginner or an expert we have all the information you need. These have been divided into three sections: Introductory Articles These articles are suitable for everyone wanting to learn about rocks and minerals.Name: From the Greek κακός for "bad" and ξένος for "guest" due to the fact that the phosphorous content of cacoxenite lessens the quality of iron smelted from ore containing it. Type Locality: ⓘ Hrbek Mine, Svatá Dobrotivá (St Benigna), Zaječov, Beroun District, Central Bohemian Region, Czech Republic. A secondary mineral found ... va jobs indeedtattoo arm drawings 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 ... 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." target table lamps gold Mindat.org is the world's leading website about minerals and where they come from. Brochantite je zelený minerál síranu mědi, který tvoří krásné krystaly různých tvarů a velikostí. Na této stránce naleznete podrobné informace o jeho vlastnostech, výskytu, historii a fotografiích z různých lokalit po celém světě. Pokud máte zájem o brochantite, neváhejte navštívit tuto stránku a objevte jeho krásu a zajímavost.