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Lake Boga granite quarry, Lake Boga, Victoria, Australia From the Lake Boga granite, a colourless glassy albite crystal. Field of view: 3mm. |
| © Judy Rowe | Photo ID: 212505 View Count: 128 |
Apatite-(CaF) : Ca5[F|(PO4)3], Biotite, Nontronite : Na0.3Fe2(Si,Al)4O10(OH)2·nH2O | |
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Lake Boga granite quarry, Lake Boga, Victoria, Australia "Cogwheel" pale blue fluorapatite in miarolitic cavity with biotite and nontronite (green). Field of view ~5cm. |
| © Stuart Mills 2003 | Photo ID: 10333 View Count: 733 |
Apatite-(CaF) : Ca5[F|(PO4)3], Muscovite : KAl2[(OH)2|AlSi3O10], Biotite | |
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Lake Boga granite quarry, Lake Boga, Victoria, Australia "Cogwheel" pale blue fluorapatite with muscovite and biotite books and associated albite. Field of view ~5cm. |
| © Stuart Mills 2003 | Photo ID: 10336 View Count: 694 |
Apatite-(CaF) : Ca5[F|(PO4)3] | |
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Lake Boga granite quarry, Lake Boga, Victoria, Australia 30mm wide Fluorapatite on quartz form the lake Boga Quarry, Victoria, Specimen is ex M brown collection. Specimen size is 145mmx85mm. Specimen and Photo A. tuma Mindat.org Photo of the Day - 31st Jan 2009 |
| © A.Tuma | Photo ID: 158998 View Count: 331 |
Apatite-(CaF) : Ca5[F|(PO4)3], Torbernite : Cu(UO2)2(PO4)2·12H2O, Orthoclase : K[AlSi3O8], Muscovite : KAl2[(OH)2|AlSi3O10], Quartz (Var: Smoky Quartz) : SiO2 | |
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Lake Boga granite quarry, Lake Boga, Victoria, Australia A fairly common mineral at Lake Boga, certainly the commonest phosphate, and probably the source of phosphate for some of the other minerals, this is none-the-less a colourful specimen. There are small green plates of torbernite visible below the fluorapatite crystal. FOV is 9mm. From the K & M Brown Collection. |
| © Steve Sorrell | Photo ID: 185870 View Count: 148 |
Apatite-(CaF) : Ca5[F|(PO4)3], Quartz : SiO2, Mica Group | |
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Lake Boga granite quarry, Lake Boga, Victoria, Australia 6mm purple fluroapatite on quartz. Specimen is 28mmx12mm, cataloge no. 07-0218. Ex K&M Brown collection. Specimen and Photo A. Tuma |
| © Andrew Tuma | Photo ID: 129726 View Count: 121 |
Apatite-(CaF) : Ca5[F|(PO4)3] | |
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Lake Boga granite quarry, Lake Boga, Victoria, Australia From the Lake Boga granite, a small crystal of apatite-(CaF) showing colour zoning. Field of view: 10mm. |
| © Judy Rowe | Photo ID: 208848 View Count: 69 |
Cacoxenite : Fe3+24Al[(OH)12|O6|(PO4)17] · 17H2O | |
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Lake Boga granite quarry, Lake Boga, Victoria, Australia Although only identified visually, the habit, and the silky appearance on broken spheres, make cacoxenite a likely candidate. It has not been previously reported but there is no reason why it shouldn't occur at this locality. I have found only one specimen whilst going through literally hundreds of specimens from the K & M Brown collection. Field ... |
| © crocoite.com | Photo ID: 182517 View Count: 279 |
Chalcopyrite : CuFeS2 | |
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Lake Boga granite quarry, Lake Boga, Victoria, Australia Golden chalcopyrite and its secondary products in a cavity within Lake Boga granite. This specimen isn't showy, but it is important, for the weathering of the chalcopyrite combined with the abundant apatite and inclusions of uraninite within the micas create the array of rare uranium phosphates found at this locality. Field of view about 8mm. |
| © Ryan Eagle | Photo ID: 231312 View Count: 50 |
Chlorargyrite : AgCl | |
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Lake Boga granite quarry, Lake Boga, Victoria, Australia Silver minerals are rare from Lake Boga. This is a nicely crystallised chlorargyrite, FOV 2mm. From the K & M Brown Collection. |
| © Steve Sorrell | Photo ID: 185837 View Count: 101 |
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