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Acanthite 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.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.3 Oct 2019 ... It will be free, but more features will be unlocked if you have at least one sponsored locality - so get sponsoring. Also, the more donations we ...Bournonite 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 …

Zemannite 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 …

Specific 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 …Website addresses that end in “org” are not for profit organizations. These sites contain information that is generally considered to be reliable. Planned Parenthood, the American ...

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). mindat.orgmindat.orgName: 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 ...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.

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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.

Bournonite 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 more about its properties, occurrence and uses at mindat.org, the largest mineral database and reference website on the internet.Type Locality: ⓘ Atacama, Chile. Polymorph of: Botallackite, Clinoatacamite. Atacamite Group. A secondary copper mineral formed through the oxidation of other copper minerals, especially in arid, saline conditions. May be confused with brochantite. May alter to malachite and chrysocolla, creating pseudomorphs.There are several ways to get free used carpet, including by using a website such as Craigslist.org or Freecycle.org. It’s also possible to get new carpet for free by contacting la...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 …mindat.org

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. Although far superior celestine crystals were previously known from Sicily, they were thought to be barium-rich as the element strontium was not discovered until the late 1780s and not formally described until 1792. Type Locality: ⓘ Bell's Mill, Bellwood, Blair County, Pennsylvania, USA. Baryte Group. 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 … 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. mindat.orgThe 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.

Type Locality: ⓘ Atacama, Chile. Polymorph of: Botallackite, Clinoatacamite. Atacamite Group. A secondary copper mineral formed through the oxidation of other copper minerals, especially in arid, saline conditions. May be confused with brochantite. May alter to malachite and chrysocolla, creating pseudomorphs.

Bournonite 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 more about its properties, occurrence and uses at mindat.org, the largest mineral database and reference website on the internet.mindat.orgChemistry 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 - …Registration 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 ...Zemannite 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 …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 ...

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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:

Originally described in the 19th century from the Slyudyanka phlogopite mines area, Lake Baikal, Irkutskaya Oblast', Transbaikalia (Zabaykalye), Eastern-Siberian Region, Russia. Blue Diopside. Usually granular diopside forming monomineral zones in magnesium skarns in some regions of Prebaikalie. Datolite is a rare mineral that forms in cavities of basaltic rocks, often with zeolites and other minerals. It has a wide range of colors and crystal habits, and is highly sought after by collectors. Learn more about datolite's properties, occurrence, and associations at mindat.org, the world's largest mineral database.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 …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, …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.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 ..."Apatite" is a field term for unidentified calcium phosphate members of the apatite group. Most "apatite" is fluorapatite, whereas hydroxylapatite is much less …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 …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 ...

Diamond is a rare and valuable mineral composed of pure carbon. It has a hardness of 10 on Mohs scale and a high refractive index. It is often found in association with kimberlite, a volcanic rock that originates from the mantle. On mindat.org, you can learn more about the properties, occurrences, varieties and localities of diamond and other minerals.Andalusite is a silicate mineral that occurs in metamorphic rocks and has a distinctive cross-shaped crystal habit. Learn more about its properties, occurrence, and uses at mindat.org, the world's largest mineral database and reference website.Copper is a common and versatile metal that forms many minerals, such as azurite, malachite, chalcopyrite and bornite. Learn more about the properties, occurrence and uses of copper minerals at mindat.org, the largest and most comprehensive mineral database and website.Instagram:https://instagram. gray caulk lowestamilyogi vip home pagered taylor's version albumdelmar replays Named in 1883 by Gustav Tschermak for the river Drau (in Latin, Drave), on which the type locality is situated. Type Locality: ⓘ Dobrova pri Dravogradu, Dravograd, Slovenia. A very common member of the Tourmaline Group. Dravite-Elbaite Series, Dravite-Schorl Series. The Mg analogue of schorl.Zemannite 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 … anime poses drawingbrokensilenze baddies east auditions 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.Chalcopyrite Group. Chalcopyrite-Eskebornite Series. A major ore of copper. Common in sulfide veins and disseminated in igneous rocks. Weathering may lead to the formation of malachite, azurite, brochantite, langite and numerous other secondary copper minerals. A Zn-rich variety is known from Atlantis II Deep (see … 15 lci pill adderall Chalcopyrite Group. Chalcopyrite-Eskebornite Series. A major ore of copper. Common in sulfide veins and disseminated in igneous rocks. Weathering may lead to the formation of malachite, azurite, brochantite, langite and numerous other secondary copper minerals. 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.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".