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Identity HelpSpecimens from Brasil
6th May 2012 06:59 UTCPHAM VAN LONG
I bought some specimens in Brasil during my holliday there. But I dont know what kind of minerals are they?
Please help me???
Thank in advance!
Long
6th May 2012 17:44 UTCRock Currier Expert
Your M5.jpg is a quartz cast after anhydrite from Iraí, Alto Uruguai region, Rio Grande do Sul, Brazil. Probably the best specimen in the lot.
6th May 2012 18:45 UTCJean-Michel Trillaud
Thomsonite from Aurangabad, India
Regards
JM Trillaud
7th May 2012 04:00 UTCPHAM VAN LONG
I bought them at a tourist center, and I aksed them what they were? But they told me all are calcite minerals and I dont believe it.
Samples M4 and M8 are grayish green color, some place are in yellow, they told me it was diopside? but I am not sure? and I also dont think they are zeolite minerals?
Please help me if you know?
Regards,
Long
7th May 2012 09:17 UTCSpencer Ivan Mather
Spencer
7th May 2012 10:46 UTCAlan Barnes (2)
M2 looks like mordenite on stilbite to me.
Alan
7th May 2012 17:36 UTCRock Currier Expert
7th May 2012 17:50 UTCRock Currier Expert
Because of the high population density, a lot of water is needed for drinking and washing. Again what does this have to do with mineral specimens. The wells in this part of India are not like the wells we are familiar with in the west. They are often at least twenty or more feet across and will extend down into the basalt fifty or more feet, well below the water table. The basalt is slowly permeable and water from the basalt below the water level will gradually fill these wells. The recharge time is somewhat variable, but in digging/blasting these wells, sometimes very large pockets zeolite and related minerals are encountered.
7th May 2012 17:54 UTCRock Currier Expert
8th May 2012 07:38 UTCPHAM VAN LONG
I also bought some more specimens at the same place (S1, S2, S5 Brasil). Samples number S3 and S4 from China? Could you please feel free to let me know, what they are?
Regards,
Long
8th May 2012 07:41 UTCPHAM VAN LONG
8th May 2012 07:43 UTCPHAM VAN LONG
8th May 2012 08:11 UTCRock Currier Expert
8th May 2012 08:12 UTCRock Currier Expert
8th May 2012 08:52 UTCPHAM VAN LONG
Here are pictures of entire samples S1, S2, S3?
Regards,
Long
8th May 2012 08:54 UTCPHAM VAN LONG
8th May 2012 12:44 UTCJean-Michel Trillaud
S5.jpg : Apophyllite from Maharashtra, India (probably exactly from Nasik)
Regards
Jean-Michel Trillaud
8th May 2012 12:52 UTCJean-Michel TRILLAUD
S1.jpg (the pinkish Xtals among whitish microxxls) :
At first glance, would look like 'heulandite' regarding the color.
But, in fact not : it's definitely a STILBITE regarding the crystallography
→ STILBITE on calcedony matrix, or possibly micro xx of quartz.
Location : probably from Nasik , Maharashtra, INDIA
Regards
JM
8th May 2012 21:44 UTCRock Currier Expert
S2 Okanite, Malad, India
S3 Cerussite? China?
S4 Aragonite? Calcite? China?
S5 Apophyllite-(KF) Nasik region?
9th May 2012 09:30 UTCPHAM VAN LONG
Thank you for your suggestion.
Sample S4 are similar to sample M3 here, and I it is not look like aragonite or calcite?
Some people told me it is smithsonit? but I am not sure?
Regards,
Long
9th May 2012 12:39 UTCTom Klinepeter
The specimen you think might be smithsonite(s-4) is calcite or aragonite as Rock has identified but not smithsonite.
Hope this help.
Tom
11th May 2012 08:24 UTCPHAM VAN LONG
Thank you very much for your help and comment.
I also bought this piece in Brasil, please help me to identify it,what?
Regards,
Long
11th May 2012 08:39 UTCRock Currier Expert
11th May 2012 12:18 UTCPHAM VAN LONG
Thank you for ypur help, but how can I upload to your general gallery?
Regards,
Long
11th May 2012 17:56 UTCRock Currier Expert
First however you must register with mindat as a member. There is not cost to do this.
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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 26, 2024 03:27:04