Rocks and Minerals最新文献

{"title":"In Memoriam: Kevin Davy (1935–2022)","authors":"James Walker","doi":"10.1080/00357529.2023.2235999","DOIUrl":"https://doi.org/10.1080/00357529.2023.2235999","url":null,"abstract":"","PeriodicalId":39438,"journal":{"name":"Rocks and Minerals","volume":"81 4","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-11-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135974962","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"The Where of Mineral Names: Windmountainite: Wind Mountain, Otero County, New Mexico","authors":"Derek D. V. Leung, Andrew M. McDonald","doi":"10.1080/00357529.2023.2235989","DOIUrl":"https://doi.org/10.1080/00357529.2023.2235989","url":null,"abstract":"Click to increase image sizeClick to decrease image size ACKNOWLEDGMENTSDerek D. V. Leung enjoyed the opportunity to work on a new mineral during his undergraduate studies. This opened new research opportunities to him, including those related to his current PhD studies. Dr. John Rakovan and Ms. Paige E. dePolo are thanked for providing helpful comments that improved the manuscript. The location index map was prepared by Mr. William W. Besse.Additional informationNotes on contributorsDerek D. V. LeungDerek D. V. Leung is a PhD candidate in geology at Laurentian University, researching the relationship between Cr- and V-bearing green micas and gold deposits; one of his research themes focuses on the crystal chemistry of modular rock-forming minerals.Andrew M. McDonaldDr. Andrew M. McDonald, after whom andymcdonaldite is named, is a professor of mineralogy at Laurentian University. He has worked for more than three decades on the mineralogy of Mont Saint-Hilaire, Quebec, Canada, describing many new minerals from here, along with branching off into the worlds of magmatic sulfides, platinum-group minerals, and applied mineralogy (indicator minerals).","PeriodicalId":39438,"journal":{"name":"Rocks and Minerals","volume":"84 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-11-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135974947","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Coming Events","authors":"","doi":"10.1080/00357529.2023.2236004","DOIUrl":"https://doi.org/10.1080/00357529.2023.2236004","url":null,"abstract":"","PeriodicalId":39438,"journal":{"name":"Rocks and Minerals","volume":"83 3","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-11-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135974951","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Erin Delventhal (b. 1990) Mineral Scene Artist","authors":"Mark Mauthner","doi":"10.1080/00357529.2023.2235978","DOIUrl":"https://doi.org/10.1080/00357529.2023.2235978","url":null,"abstract":"Click to increase image sizeClick to decrease image size Additional informationNotes on contributorsMark MauthnerMark Mauthner, a consulting editor of Rocks & Minerals, is a mineral photographer.","PeriodicalId":39438,"journal":{"name":"Rocks and Minerals","volume":"83 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-11-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135974953","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Collector’s Note: Indicolite Discovery of the Mt. Mica Pegmatite, Oxford County, Paris, Maine","authors":"Gary Freeman","doi":"10.1080/00357529.2023.2235985","DOIUrl":"https://doi.org/10.1080/00357529.2023.2235985","url":null,"abstract":"","PeriodicalId":39438,"journal":{"name":"Rocks and Minerals","volume":"82 3","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-11-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135974957","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"In Memoriam: Albert M. “Al” Liebetrau (1938-2023)","authors":"Bill Dameron","doi":"10.1080/00357529.2023.2236000","DOIUrl":"https://doi.org/10.1080/00357529.2023.2236000","url":null,"abstract":"","PeriodicalId":39438,"journal":{"name":"Rocks and Minerals","volume":"82 5","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-11-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135974955","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Signature Specimen: The Alma King Rhodochrosite At the Denver Museum of Nature & Science","authors":"C. Francis, J. Hagadorn","doi":"10.1080/00357529.2023.2213606","DOIUrl":"https://doi.org/10.1080/00357529.2023.2213606","url":null,"abstract":"is a rhodochrosite specimen known as the Alma King. Its large size, clarity, rhombohedral shape, and cherry-red color make it one of the most glamorous in the mineral kingdom. Perched atop a white carpet of thin quartz crystals, the bold crystal’s angular margins are accentuated by the jagged, irregular shape of the slab upon which it lies. Clusters of blue fluorite, black sphalerite, and yellow calcite occur elsewhere on the slab and provide a striking color contrast for the Alma King rhodochrosite and the other smaller rhodochrosite crystals that adorn the specimen (fig. 1). One does not need to be a mineral collector to be captivated by its beauty, nor to pick up on the “red, white, and blue” theme carried through the piece. Although the Denver Museum of Nature & Science (DMNS) (fig. 2) exhibits many fine specimens, including local amazonite, gold, and aquamarine, it is the Alma King that visitors might remember most. It was mined from a tetrahedrite-rich vein in the Sweet Home mine under Mount Bross—not far from Alma, the highest town (at an elevation of 10,578 feet; 3,225 meters) in North America (figs. 3 and 4). At the Denver Museum of Nature & Science CARL A. FRANCIS Maine Mineral & Gem Museum PO Box 500 Bethel, Maine 04217 cfrancis@mainemineralmuseum.org","PeriodicalId":39438,"journal":{"name":"Rocks and Minerals","volume":"98 1","pages":"461 - 467"},"PeriodicalIF":0.0,"publicationDate":"2023-08-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44794577","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Conneisseur’s Choice: Schizolite: Poudrette Quarry, Mont Saint-Hilaire, La Vallée-du-Richelieu RCM Montérégie, Québec, Canada","authors":"Bruce Cairncross","doi":"10.1080/00357529.2023.2213152","DOIUrl":"https://doi.org/10.1080/00357529.2023.2213152","url":null,"abstract":"Schizolite has undergone some mineralogical ignominy since its description and naming by Winther (1901). Discovered in Greenland (Peterson and Johnson 2005), schizolite was relegated to varietal status in 1955 only to be reinstated in 2018. In addition, two world-famous mineral localities—Mont Saint-Hilaire, Canada, and the Kalahari manganese field, South Africa—have produced the finest examples of schizolite, but these, too, have followed a diverse path until investigations revealed their true identity (fig. 1). This saga is partially explained by schizolite’s chemistry. It forms part of the serandite-schizolite-pectolite series of the wollastonite group (https://www.mindat.org/min-44010. html; accessed March 2023). Serandite, NaMnSi3O8(OH), contains sodium and manganese while pectolite, NaCa2 Si3O8(OH), contains calcium and is manganese deficient. Schizolite, NaCaMnSi3O8(OH), has an ordered crystal structure with Ca occupying the M1 and Mn occupying the M2 octahedral sites (Tarassoff and Horváth 2019). Because of their similar atomic radii, manganese and calcium can substitute for one another, forming manganoanpectolite and/or calcium-bearing serandite. Schizolite, NaCaMnSi3O8(OH), crystallizes in the triclinic system (although originally described as monoclinic) with perfect cleavage on {100} and {001} (https://www. handbookofmineralogy.org/pdfs/schizolite; accessed March 2023). It was this specific property that led to its name, derived from Greek for skhizo, “to split.” Winther (1901) emphasized that after crushing, the sample kept splitting along the cleavage planes such that it was extremely difficult to obtain transverse crystal fragments. Schizolite has a hardness of 5, a vitreous to subvitreous luster, and a specific gravity of 3.09. Crystals are translucent to opaque, pale bright-pink to brown and produce a white streak. Flink (1898) collected the first samples from Greenland in 1897 (Gordon 1924) and described the crystals as pink columns. The type locality is Tugtup Agtakôrfia, Tunulliarfik Fjord, Ilímaussaq Complex, Kujalleq, Greenland (fig. 2), with the type-material housed at the Natural History Museum of Denmark. Fifty-four years after its description, Schaller (1955), in a study of the pectolite-schizolite-serandite series, concluded that schizolite was merely manganoanpectolite and that it be discarded as an unnecessary species name. He based this on chemical analyses of several samples of pectolite, “maganpectolite,” serandite, and schizolite, the last from Greenland. Even so, Ohashi and Finger (1978) later resolved the crystal structure of schizolite but did not suggest reinstatement of the species. It was, therefore, during this period when schizolite was no longer considered a valid species that two significant discoveries were made, one in the Kalahari manganese field in South Africa, and the other in Mont Saint-Hilaire in Canada. Schizolite","PeriodicalId":39438,"journal":{"name":"Rocks and Minerals","volume":"98 1","pages":"438 - 445"},"PeriodicalIF":0.0,"publicationDate":"2023-08-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47630663","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Internet Directory for the Earth Sciences","authors":"","doi":"10.1080/00357529.2023.2213622","DOIUrl":"https://doi.org/10.1080/00357529.2023.2213622","url":null,"abstract":"","PeriodicalId":39438,"journal":{"name":"Rocks and Minerals","volume":"98 1","pages":"489 - 490"},"PeriodicalIF":0.0,"publicationDate":"2023-08-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49436444","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Fiftieth Rochester Mineralogical Symposium: Contributed Papers in Specimen Mineralogy—Part 1","authors":"Mineralogical Symposium","doi":"10.1080/00357529.2023.2213157","DOIUrl":"https://doi.org/10.1080/00357529.2023.2213157","url":null,"abstract":"The Ryerson Hill quarry is in a complex pegmatite located in Paris, Oxford County, Maine. It is surrounded by some of the most productive mines in Oxford County, including Mt. Mica, which is about a mile away. This report focuses on new finds in the core zone of the pegmatite between two previously excavated pits where smoky quartz and hydroxlherderite were found. Triphylite pods occur throughout the exposed core zone of the quarry, with the largest concentration of pods occurring from the edge of the eastern pit to the halfway point between the two pits, along a 3 × 4-meter rectangular area. The largest pod to date was 1 × 0.5 × 0.2 meters. The pods show some replacement of triphylite by 0.5–1.0-mm vivianite crystals. Numerous secondary phosphates are known from the location, but overall, most tend to be Fe-dominant because the primary triphylite is Fe-dominant. Elbaite is rare and occurs as millimeter-long crystals. Clear, brown, blue, and green tourmaline has been found in a 7 × 5-meter rectangular area. The pegmatite exhibits sharp contact with mica schist. The contact zone of the pegmatite is albitic. Titanium oxides have been found at contact points in the pegmatite, which also is an area of assimilation. Rutile occurs as straw-colored sagenite aggregates ranging from 1 to 3 mm (Alexander, Falster, and Simmons 2022). Anatase occurs as dipyramidal crystals, blue in color with some transparency. The anatase crystals average 1–5 mm, with the largest being 10 × 6 × 5 mm. The titanium oxides are found in an area that was contaminated by the partial assimilation of country rock. Concentrations of titanium oxides are associated with contact points in the pegmatite, which are close to one another and have convergence points. One of the convergence points resulted in a pocket, the Molly Pocket, found on 1 June 2022. This pocket contained anatase, beryl, and tourmaline rods. Contributed Papers in Specimen Mineralogy","PeriodicalId":39438,"journal":{"name":"Rocks and Minerals","volume":"98 1","pages":"455 - 460"},"PeriodicalIF":0.0,"publicationDate":"2023-08-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49316844","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}