 | | Journal (article/letter/editorial) | | Mineral Mysteries Quartz Perimorphs After ?? FROM MOROCCO Downloaded by [University Library Utrecht]...or at least the past thirty years a locality in Morocco has been producing strange mineralogical objects...These are commonly referred to as pseudomorphs of quartz after crystals of an undetermined mineral or minerals...the Akasri quarry, near Tarazout Village, Sidi Rahal, Morocco. Yves Masson specimen and photo. Figure 2...Local miner unearthing an amethyst geode at Sidi Rahal, Morocco. Mark Mauthner photo. John S. White, a consulting |  | | Journal (issue) | | Collection of Jewels Digit Patterns in Opal Agate from Morocco Field Report on Oregon Sunstone Fall 2013 VOLUME... 148 pg. 143 Agates from Sidi Rahal, in the Atlas Mountains of Morocco: Gemological Characteristics...Gem News International Epigenetic malachite in quartz • Dumbbell-like inclusion in diamond • Boron carbide...recipe for quench-crackling inexpensive rock crystal quartz and infusing the surface-reaching fissures with...the Cheapside Hoard is a quench-crackled and dyed quartz made to resemble spinel. A genuine spinel of this |  | Pršek, Jaroslav, Dumańska-Słowik, Magdalena, Powolny, Tomasz, Natkaniec-Nowak, Lucyna, Toboła, Tomasz, Zych, Damian, Skrepnicka, Dominika (2020) Agates from Western Atlas (Morocco)—Constraints from Mineralogical and Microtextural Characteristics. Minerals, 10 (2) 198 doi:10.3390/min10020198 | Journal (article/letter/editorial) | | minerals Article Agates from Western Atlas (Morocco)—Constraints from Mineralogical and Microtextural...the vicinity of Asni and Agouim (Western Atlas, Morocco) were investigated using microscopic observations...presence of lattice-bladed (after barite and calcite) quartz may be, in turn, ascribed to the boiling-related...occurrence of growth lines (so-called Bambauer quartz) and intergrowth of length-slow and length-fast...spectroscopy, silica matrix of the agates is made of α-quartz with a local admixture of moganite (from 0.0 up |  | Wight, Quintin (2013) Media Reviews: Marokko: Mineralien, Bergbau, Abenteuer (Morocco: Minerals, Mining, Adventure), extraLapis No. 42, by Frank de Wit et al. Christian Weise Verlag, Munich, Germany. 98 pages (in German); 2012; €19.80 (softbound). Rocks & Minerals, 88 (3) 283-284 doi:10.1080/00357529.2013.777637 | Journal (article/letter/editorial) | | 2014 Marokko: Mineralien, Bergbau, Abenteuer (Morocco: Minerals, Mining, Adventure), extraLapis no. 42...others have written one section each. Section 1, “Morocco—Minerals and More,” gives an explanation of why...2, “An Overview of Morocco,” is a short introduction to the geology of the region, indicating that it...the mountains. Section 3, “‘Not only’ Agate in Morocco,” outlines the superb agate specimens that have...carefully, but he does not show where it is in Morocco. Fortunately, the geological map of Section 2 does |  | | Journal (issue) | | OwnAgate Collecting around Kremmling Colorado Morocco - The Country, The People and...Agates By Holger...for blue beryl, big columbite crystals and rose quartz. Day 3 we visited pegmatites in Sahatany Valley...to Ihasofotsy village to see lots of wonderful quartz crystals. June 3rd & 4th, we drove to nearby Ivato...these minerals can occur as mineral inclusions in quartz, paragenetic minerals intergrown with SiO2, or...coarse-grained calcite has been formed as overgrowths on quartz or chalcedony in the central part of the agate |  | | Book | | Dominika Skrepnicka Agates from Western Atlas (Morocco)—Constraints from Mineralogical and Microtextural...of the Zhanguohong Agate from Beipiao, Liaoning Province, China: A Combined Microscopic, X-ray Diffraction...and Opal-CT in Agates from Paleocene/Eocene Tuffs, El Picado (Cuba) Reprinted from: Minerals 2021, 11,...articles devoted to detailed studies of agates from Morocco [3], China [4], Russia [5–7], and Cuba [8]. This... ending with the formation of microcrystalline quartz. They recommend studies of agates hosted by very |  | | Journal (issue) | | lapidary society AGM reports SMLS Visit to Morocco Part 2 SMLS Field trip to the North of England...SMLS Journal 245 Sept/Oct 2013 SMLS VISIT TO MOROCCO April 2013 Part 2: Geology, sites and minerals...the mines a short distance to the north: Aouli, Sidi Ayat and Mibladen. We then headed into the High...as we descended towards Marrakech we visited Sidi Rahal. · .·•· · :.:~.:~9·:.:-/:.•···{\~'):•'.::; l'I_...>- . .-:· ..- .,_·., 7 Fig. 1 Map of central Morocco (not to scale) Kerouchen After our convoy of jeeps |  | | Journal (article/letter/editorial) | | articles devoted to detailed studies of agates from Morocco [3], China [4], Russia [5–7], and Cuba [8]. This... ending with the formation of microcrystalline quartz. They recommend studies of agates hosted by very...Atlas Morocco) and compare their results with previous studies of nearby localities Sidi Rahal and Kerrouchen...Kerrouchen (Atlas Mountains, Morocco). The authors identified the similarities and differences between...between agates from these four localities in Morocco. They concluded that the possible sources of silica-bearing |  | | Journal (article/letter/editorial) | | addition to quartz and moganite. The fluid inclusions study shows that the crystalline quartz in the center...intercalated with other silica phases (macro-crystalline quartz, quartzine, opal-A, opal-CT, cristobalite, and...copper and copper oxides in agates of the Norilsk region (Russia). This dispersion of micro grains of copper...in agates from Sidi Rahal and Kerrouchen (Khénifra Province, Meknés-Tafilalet Region), in the Atlas mountains...mountains of Morocco [26,27]. Moroccan agates occur within Triassic basaltoids as lens-shaped specimens |  | | Journal (issue) | | sussex mineral & lapidary society SMLS Visit to Morocco SMLS Competition 2013 · Display at Haywards Heath...(leucochalcite) fibres found in a cavity of vein quartz on the Ting Tang dumps in Cornwall. The judge commented...crystals intermingled with clear pencil like milky quartz crystals. The photograph was very ~lear enhancing...Earth, Fort William and one of erythrite from Morocco. Judith Woodbridge Class 9a Photograph, where main...Brough V Class 11 Display based on the theme of Quartz, Agate, Chalcedony, Flint.. There were five entries |  | | Book | | Courtesy M. Ihmadi (Ihmadi Trilobite Center, Alnif, Morocco) André Michard · Omar Saddiqi · Ahmed Chalouan...(Eds.) Continental Evolution: The Geology of Morocco Structure, Stratigraphy, and Tectonics of the ...Figures 13 Editors Prof. Dr. André Michard 10 rue des Jeûneurs 75002 Paris France andremichard@orange...Faculty of Sciences B.P. 5366 Maârif Casablanca Morocco o.saddiqi@fsac.ac ma Prof. Dr. Ahmed Chalouan...University avenue Ibn Batouta Rabat B.P. 1014 Morocco chalouan@fsr.ac.ma Prof. Dr. Dominique Frizon |  | | Book | | ·: ·:. ,-i s ·:_· · : Bou Skour · EI Hammam Ghar el Anz Gourrama Haute Moulouya lmilchil !mini lmiter...die geologischen Hauptein- w ßou M (Pb heiten des Anti-Atlas und die hier befindlichen wichtigsten...marokkanischen ses Buches die äußerst mineralreiche Region in Nordafrika nicht wiedergeben. Mineralien aus...islamische Welt aus I 00 I Nacht am westlichen Ende des Maghreb eintaucht. Hier stoßen große Armut und traumhafter...Tier- und Pfl anzen- weit. Selbst die Geologie des Landes ist von Kontrasten geprägt. Nach heftigen |  | | Journal (issue) | | Devon Minerals Cleaning Minerals Minerals from Morocco Field trip to Plumpton Plain Geochemistry for Amateur...:,-"-,.. fl!).1\Vtt 35 R..e;:z·!'\ 'n ... (El 1!:'.JU-C 1!:0-21 ,, . . H'l143 ., .. . . ...SMLS Journal 243 May/June 2013 MINERALS FROM MOROCCO Jolyon Ralph -1 March 2013 Most mineral collectors...trips. The second such conference was held in Morocco in November 2012 and was the basis of Jolyon Ralph's...111;/, !j :+}{~;;~;:{~.\~lil;iil'.ii1 Map of Morocco The group travelled in a rough arc that encompassed |  | Götze, Jens, Stanek, Klaus, Orozco, Gerardo, Liesegang, Moritz, Mohr-Westheide, Tanja (2021) Occurrence and Distribution of Moganite and Opal-CT in Agates from Paleocene/Eocene Tuffs, El Picado (Cuba) Minerals, 11 (5) 531 doi:10.3390/min11050531 | Journal (article/letter/editorial) | | and Opal-CT in Agates from Paleocene/Eocene Tuffs, El Picado (Cuba) Jens Götze 1, *, Klaus Stanek 2 , Gerardo...and Opal-CT in Agates from Paleocene/Eocene Tuffs, El Picado (Cuba). Minerals 2021, 11, 531. https://doi... Abstract: Agates in Paleocene/Eocene tuffs from El Picado/Los Indios, Cuba were investigated to characterize...contain numerous fissures and veins mineralized by quartz and chalcedony. These features indicate secondary...opal-CT (>6 wt%) and moganite (>16 wt%) besides alpha-quartz. The presence of these elevated amounts of “immature” |  | Powolny, Tomasz, Dumańska-Słowik, Magdalena, Sikorska-Jaworowska, Magdalena, Wójcik-Bania, Monika (2019) Agate mineralization in spilitized Permian volcanics from “Borówno” quarry (Lower Silesia, Poland) – microtextural, mineralogical, and geochemical constraints. Ore Geology Reviews, 114. 103130 doi:10.1016/j.oregeorev.2019.103130 | Journal (article/letter/editorial) | | chalcedony evolving into strongly-zoned prismatic quartz with a distinctive blue cathodoluminescence. They...flamboyant/feathery, jigsaw puzzle/mosaic, and Bambauer quartz), but also comprise numerous solid inclusions such...mostly composed of such silica polymorphs as low α-quartz and moganite (Gotze et al., 1998; Moxon and Ríos...prior to the development of alternating chalcedony-quartz layers (Wang and Merino, 1990; Manecki, 2015; Howard...agate formation has been constrained using Al-in quartz geothermometry, as well as oxygen isotopic composition |  | | Journal (article/letter/editorial) | | intergrown or intercalated with macrocrystalline quartz, quartzine, opal-A, opal-CT, cristobalite and/or...characteristic agate banding and colors. Keywords: agate; quartz; chalcedony; silica minerals; micro-structure;...samples. Isotope and fluid inclusion studies on quartz and chalcedony samples were carried out to get...Switzerland. Separate chalcedony and macrocrystalline quartz pieces were prepared, chemically treated and analyzed...spectrometer [72]. Fluid inclusions in macrocrystalline quartz of the agates (polished 100 µm thick sections) |  | | Journal (article/letter/editorial) | | colours and shapes. Its main component mineral is α-quartz, which is colourless. When the crystallite size...(including water content) [1,2], and porosity of α-quartz microcrystals change, it also produces different...public. The Beihong agate is mainly composed of α-quartz and moganite, with a minor amount of goethite and...Beihong agates from Xunke County, Heilongjiang Province, China, were selected for this study with colours...The presence of either hematite or goethite in a quartz matrix can be detected at extremely low levels |  | | Journal (article/letter/editorial) | | Chalcedony in Devonian basalt Quartz varieties in Tertiary basalts Quartz varieties in Tertiary basalts...basalts Chalcedony/chert in Tertiary basalts Quartz varieties in Permian volcanics I, I, I, I, I, I I M R...44º21N, 29º29N, Chalcedony in Tertiary volcanics Quartz varieties in Tertiary dacite Chalcedony in Tertiary...103º46W 116º17W 121º10W 106º16W Sidi Rahal, 50 km E Marrakech, Morocco Hayl as Safil massive sulfide deposit...India 31º38N, 7º28W Quartz varieties in Late Cretaceous volcanics Quartz varieties in Mesozoic basalts |  | | Journal (issue) | | probably our best discovery ever. We found excellent quartz and chalcopyrite with Tom Cotterell at Nant Helen...suitable for micro mounting. The reported minerals are quartz, “potash feldspar” and plagioclase, muscovite,...found on fossilised wood from the Fichtelgebirge region of Bavaria. Ablesonite (C31H32N4Ni) is also a recognised...corker) and, as always, just a few little Cambrian quartz. BMS Newsletter 89 13 Some of these have called...remarkable effects on pyromorphite, pharmacosiderite, quartz and rutile (although with the last one has to be |  | Hulsbosch, Niels, Thomas, Rainer, Boiron, Marie-Christine, Dewaele, Stijn, Muchez, Philippe (2017) Direct Observation of Boro-Aluminosilicate Melt Compositions: Insights From Raman Spectroscopy of Melt Inclusions In Pegmatitic Tourmaline of the Gatumba-Gitarama Area (Rwanda) The Canadian Mineralogist, 55 (3) 377-397 doi:10.3749/canmin.1600093 | Journal (article/letter/editorial) | | Lorraine, CNRS, CREGU, GeoRessources, Boulevard des Aiguillettes B.P. 239 F-54506, Vandoeuvre lès Nancy...of melt inclusions in tourmaline from tourmaline-quartz-(muscovite) assemblages of common pegmatites of...show a main mineralogy composed of muscovite, a-quartz, mogánite, dickite, and minor feldspars which...transition from a granitic mineral mode towards a schorl-quartz-(muscovite) assemblage within the common mineralogical...consist entirely of ordinary igneous minerals (i.e., quartz, plagioclase, K-feldspar, muscovite, bio- tite |  | Zhang, Xuemei, Ji, Lei, He, Xuemei (2020) Gemological Characteristics and Origin of the Zhanguohong Agate from Beipiao, Liaoning Province, China: A Combined Microscopic, X-ray Diffraction, and Raman Spectroscopic Study. Minerals, 10 (5) 401 doi:10.3390/min10050401 | Journal (article/letter/editorial) | | of the Zhanguohong Agate from Beipiao, Liaoning Province, China: A Combined Microscopic, X-ray Diffraction...Abstract: The Zhanguohong agate from Beipiao (Liaoning province, China), which occurs in the intermediate–felsic...interlayered micro-granular quartz, fibrous chalcedony, and jigsaw quartz bands are common in the banded...that all of the samples were mainly composed of α-quartz and moganite, with minor hematite and goethite...chalcedony, is mainly composed of silica phases (i.e., α-quartz, moganite, opal-CT, opal-C, and opal-A) [1–4], |  | | Journal (issue) | | mit viel Liebe und Aufwand durch die Mitglieder des Vereins gestaltet wird, ist 2012 der Geschichte Freibergs...Vidar Ellingsen kürzlich durch die Beschreibung des mit der GyrolithBeyerit-Gruppe verwandten neuen Minerals...Fündig ra O 0 Nach Erscheinen des Artikels über die Mineralien des Hopffeldbodens (MW 6/11: 68-78)...deklariert.,, Vaterit ist daher von der Mineralienliste des Hopffeldbodens zu streichen. Nach freundlicher Mitteilung...damalige Analysenmethode, die zur Fehlidentifizierung des „Vaterits"führte, leider nicht mehr eruiert werden |  | | Journal (issue) | | too much and finds solace in Adventures through Morocco. We gec a rapid response team report on the 2023...remote corner of Western Australia's east Kimberley region, 1900miles from Perth, the scate's i_!SØOkm capital...the breakup stretched the area. This weakcned the region. allowing deep lamproite magma to erupt and bring...sphalerite, chalcopyrite, specular hematite and quartz, and supergenemineralsare listed as anglesite,brochantite...re/ativelycommonwhenlookedfor. It is associatedwith chrysocolla,quartz, ond dioptasein blad |  | | Journal (issue) | | fabuleux voyage interactif et ludique dans le monde des minéraux / à usage éducatif et professionnel 10...la découverte des Lieux en activité ou abandonnés (carrières - mines - galeries - ha/des - etc.. . ) décrits...Centre f rançais de droit de copie (CFC) 20, rue des grands Augustins 75006 Paris - Tél. 01.44.07.47....dernière). Nous avons récemment été contactés par des chercheurs hollandais qui travaillent sur les œuvres...la barytine ! Quelle image porteuse de sens, pour des exploitants comme nous, en imaginant que notre Barytine |  | | Catalog/List | | Elbaite on Feldspar. And then there is another Rose Quartz, smaller than the “Madona Rosa”, but just as choice...and understood: Calcite in scalenohedral form; Quartz - as stalactites, and as a druzy coating ; and...revolves around the ordered relationship between the Quartz stalactites and the Calcite. Looking straight down...the growing Calcite crystal influence where the Quartz “fingers” decided to grow, it also influenced the...the dark narrow lines of inclusions along the Quartz fingers. All of which begs the question: “And just |
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Sidi Rahal Quarries, Sidi Rahal, El Kelaâ des Sraghna Province, Marrakesh-Safi Region, Morocco