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Latrappite : (Ca,Na)(Nb,Ti,Fe)O3 |
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Quebec Columbium Ltd. Property, Oka complex, Oka, Deux-Montagnes RCM, Laurentides, Québec, Canada
Crystal size 3 mm. Unanalysed. Self collected 2003. Photo and collection Giovanni Fraccaro. |
| © GiovanniFraccaro | Photo ID: 45826 View Count: 312 |
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Quebec Columbium Ltd. Property, Oka complex, Oka, Deux-Montagnes RCM, Laurentides, Québec, Canada
Niocalite (yellow) from the Nb-rich sovite at Oka, Quebec. Largest crystal is approximately 4 mm long. Also present are calcite, perovskite (black) and apatite (grey, corroded by weak acids). Contrast has been digitally enhanced to distinguish the calcite matrix from the niocalite, which is actually a slightly paler yellow. In the photographer's ... |
| © Tony Peterson | Photo ID: 46987 View Count: 545 |
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Quebec Columbium Ltd. Property, Oka complex, Oka, Deux-Montagnes RCM, Laurentides, Québec, Canada
Width of field is 2.5 mm. Collection of Jesse Crawford. The depth of field has been enhanced using Helicon Focus (11 exposures). Equipment: Nikon D-100 digital camera on a homemade microscope. This specimen came labeled as latrappite, however in the absence of an analysis, it's impossible to say for certain that it is not the more common ... |
| © 2008 Jesse Crawford | Photo ID: 175112 View Count: 87 |
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Quebec Columbium Ltd. Property, Oka complex, Oka, Deux-Montagnes RCM, Laurentides, Québec, Canada
dimension crystal mm. 1,2 |
| © luigi chiappino | Photo ID: 202701 View Count: 61 |
