 | London, D., Morgan, G. B., Paul, K. A., Guttery, B. M. (2012) Internal Evolution of Miarolitic Granitic Pegmatites at the Little Three Mine, Ramona, California, USA. The Canadian Mineralogist, 50 (4) 1025-1054 doi:10.3749/canmin.50.4.1025 | Journal (article/letter/editorial) | | MIAROLITIC GRANITIC PEGMATITES AT THE LITTLE THREE MINE, RAMONA, CALIFORNIA, USA David LONDON§, George B. MORGAN...73019, USA Abstract Miarolitic granitic pegmatites at the Little Three mine property near Ramona, San...San Diego County, California, USA, possess a bulk composition that closely matches that of a hydrous peraluminous...partially cumulate nor hydrothermal in nature. The Little Three pegmatites are, however, sharply zoned. Chemical...cooling history, field diffusion, Little Three mine, Ramona, California. Introduction The coarse grain-size |  | | Journal (article/letter/editorial) | | online 27 February 2018 Tinzenite, a member of the axinite group with formula revised to Ca2Mn2+ 4 Al4[B2Si8O30](OH)2...Center, University of Maine, Orono, Maine 04469, USA *Corresponding author, e-mail: esgrew@maine.edu ...minerals had given the formula for the tinzenite, an axinite-group mineral, as Ca6Al4[B2Si8O30](OH)2. However...than the other three members of the axinite group, and significantly more Mn2þ than the Mn end-member, axinite-(Mn)...axinite-(Mn), Ca4Mn2Al4[B2Si8O30](OH)2. Revision of the tinzenite formula to Ca2 Mn2þ 4 Al4 ½B2 Si8 O30 |  | | Report (issue) | | pages of “California and Nevada on the website”—almost entirely California, in fact, with a little bit of...here from the famous Little Three mine, Ramona district, San Diego County, California, the star of the show...Topaz, 6 cm, from the Little Three mine, Ramona district, San Diego County, California. Ex Bryant Harris...=========================== Also from the Little Three pegmatite, Dave has very good miniature to small-cabinet...microcline…even axinite and hambergite, all from the collection of the late Bryant Harris. The axinite—probably |  | | Journal (article/letter/editorial) | | 10.1127/ejm/2016/0028-2544 PrePub Article Axinite-(Mn) fro m miarolitic granitic pegmatites of the...Deceased 14 May 2015 rre ct ed pr Abstract: Axinite is an exotic accessory mineral in granitic pegmatites...compositional ranges of axinite from granitic pegmatites are close to the axinite-(Mn) and the axinite-(Fe) endmembers...data on the composition of axinite-(Mn) and the formation conditions of axinite-containing mineral assemblages...pegmatites of the Malkhan gem-tourmaline deposit. Axinite-(Mn) occurs only in the pockets in which Li-Al tourmaline |  | | Journal (article/letter/editorial) | | series, pollucite, tantalite-(Fe) and tantalite-(Mn), i.e., super-LCT deposits. Keywords: granitic pegmatite...the location of the ternary feldspar solvus at three temperatures, and of the cotectic. The point z marks...inward, and give way in the intermediate zone to Mn-enriched fluorapatite. At the core margin, pods of...anorthite, P-anorthite: primitive anorthite. There are three solvi; from left to right, Peristerite, Bøggild...relative depletion in lithium, cesium and tantalum, three elements that are enriched in granitic pegmatites |  | | Journal (issue) | | gressman@minrec.org Articles The Malkhan Pegmatite District Krasny Chikoy, Transbaikalia, Eastern Siberian...the Forgotten Pocket, Sosedka pegmatite, Malkhan district. The same specimen as shown from a different angle...or $225/three years Subscription (outside the U.S.): $89/one year, $178/two years, or $267/three years... $216/two years, or $324/three years, (Canada) $186/one year, (outside USA other than Canada) $265 for...an exact measure of how many people watched each little video clip of the larger documentary. The results |  | | Book (volume) | | Н3О+, K, Sr, REE, Y, Ba, Mn, Ca; M(1) ¼ Ca, Mn, REE, Na, Sr, Fe; M(2) ¼ Fe, Mn, Na, Zr, Ta, Ti, K, Ba,...octahedron and major Mn–O-stretching band positions in IR spectra of tetravalent Mn oxides was obtained...data (open circles) and as ΣVIM2+ ¼ Ti + Nb + Mg + Mn + Fe + Zn 8 for samples with unknown structures...labuntsovite-Mn (19, 21, 23), vuoriyarvite-K (20), karupmøllerite-Ca (24), kuzmenkoite-Mn (25, 27, 30)...30), kuzmenkoite-Zn (28), organovaite-Mn (29), gutkovaiteMn (31), organovaite-Zn (32, 33) and parakuzmenkoiteFe |
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Little Three Mine, Ramona, Ramona Mining District, San Diego County, California, USA