Learning CenterWhat is a mineral?The most common minerals on earthInformation for EducatorsMindat ArticlesThe ElementsThe Rock H. Currier Digital LibraryGeologic Time
搜索矿物的性质搜索矿物的化学Advanced Locality Search随意显示任何一 种矿物Random Locality使用minID搜索邻近产地Search Articles搜索词汇表更多搜索选项
╳Discussions
💬 Home🔎 Search📅 LatestGroups
EducationOpen discussion area.Fakes & FraudsOpen discussion area.Field CollectingOpen discussion area.FossilsOpen discussion area.Gems and GemologyOpen discussion area.GeneralOpen discussion area.How to ContributeOpen discussion area.Identity HelpOpen discussion area.Improving Mindat.orgOpen discussion area.LocalitiesOpen discussion area.Lost and Stolen SpecimensOpen discussion area.MarketplaceOpen discussion area.MeteoritesOpen discussion area.Mindat ProductsOpen discussion area.Mineral ExchangesOpen discussion area.Mineral PhotographyOpen discussion area.Mineral ShowsOpen discussion area.Mineralogical ClassificationOpen discussion area.Mineralogy CourseOpen discussion area.MineralsOpen discussion area.Minerals and MuseumsOpen discussion area.PhotosOpen discussion area.Techniques for CollectorsOpen discussion area.The Rock H. Currier Digital LibraryOpen discussion area.UV MineralsOpen discussion area.Recent Images in Discussions
Identity HelpCu-Austinite vs Conichalcite from Ojuela
27th Apr 2012 18:02 UTCPeter Hargis
For instance, these two look similar to me...
http://www.mindat.org/photo-233419.html
http://www.mindat.org/photo-31557.html
27th Apr 2012 18:45 UTCRichard Gunter Expert
I did a B.Sc. thesis in 1977 on the Ojuela Mine Conichalcite-Austinite Series and found that there is no visual method of determining the difference between phases. I also found that it is a three component system with significant Pb in some of the crystals. The Pb altered the unit cell dimesions sufficiently that even XRD was not always accurate. The sample posted on my page has XRD cell size and microprobe data so I know what that sample is. The thesis was completed before the characterization of Arsendescloizite but I did not find any samples that were rich enough in Pb to qualify as a new phase.
27th Apr 2012 19:04 UTCPeter Hargis
Have you thought about adding your research to the mineral page for the series, as a reference?
27th Apr 2012 19:24 UTCRichard Gunter Expert
Unless the samples are colourless, in which case they are probably Austinite, all of the Conichalcite-Austinite samples are members of the series. I never thought of putting the cell's size and microprobe analyses with the posted sample but I will do that to assist others.
27th Apr 2012 19:44 UTCRichard Gunter Expert
I have added the cell size and microprobe results to the note on photo #428254. I hope this helps clear up the confusion a little bit.
27th Apr 2012 20:17 UTCPeter Hargis
版权所有© mindat.org1993年至2024年,除了规定的地方。 Mindat.org全赖于全球数千个以上成员和支持者们的参与。
隐私政策 - 条款和条款细则 - 联络我们 - Report a bug/vulnerability Current server date and time: 2024.3.28 17:44:58
隐私政策 - 条款和条款细则 - 联络我们 - Report a bug/vulnerability Current server date and time: 2024.3.28 17:44:58