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Improving Mindat.orgvrong apatite
8th Sep 2007 17:39 UTCPeter Andresen Expert
http://www.mindat.org/photo-118915.html
is not a clorapatite, but a hydroxylapatite. Clorapatite is not found at this locality and should be removed from the list of minerals from the locality.
Regards
Peter
8th Sep 2007 17:42 UTCPeter Andresen Expert
http://www.mindat.org/photo-38354.html
8th Sep 2007 18:16 UTCUwe Kolitsch Manager
If clorapatite occurs at other Snarum localities, why not at this one? Is it only Cl-bearing OH-apatite?
8th Sep 2007 18:28 UTCPeter Andresen Expert
If the MinRec ref is to the serpentinite localities, it should also be deleted from this locality.
8th Sep 2007 19:00 UTCUwe Kolitsch Manager
8th Sep 2007 19:03 UTCPeter Andresen Expert
I'll try to did up a reference for the Oksøyekollen locality.
1st Feb 2008 20:27 UTCKnut Edvard Larsen 🌟 Manager
Does anybody knows the Weber (1851) reference ?
Peter, there are (according to H.J.Bergs guide) other old apatite localities in Snarum (not serpentine-magnesite outcrops) like Lofthus, Enden or Otterbekk (localities not listed in Mindat) :-)
1st Feb 2008 21:01 UTCJim Ferraiolo
P 41.54
Fe 1.79
Ca 53.46
Cl 2.66
There are additional analyses from G.Rose on p.531 from Snarum and Arendal showing 4.28% and 0.801%'chloride of calcium' respectively.
27th Feb 2011 17:21 UTCKnut Edvard Larsen 🌟 Manager
Relatively recent EPMA analysis of these apatite crystals from Oksöiekollen confirmed these to be hydroxylapatites with a significant content of F.
An analysis done in the core of one sample however also showed a low content of OH and about equally dominating content of Cl and F.
Nordrum, F.S. Larsen, A.O. & Erambert, M. (2010): Apatitt fra noen norske mineralforekomster. Norsk Bergverksmuseum Skrift, 43: 65-70
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Copyright © mindat.org and the Hudson Institute of Mineralogy 1993-2024, except where stated. Most political location boundaries are © OpenStreetMap contributors. Mindat.org relies on the contributions of thousands of members and supporters. Founded in 2000 by Jolyon Ralph.
Privacy Policy - Terms & Conditions - Contact Us / DMCA issues - Report a bug/vulnerability Current server date and time: April 23, 2024 08:41:11