Donate now to keep alive!Help|Log In|Register|
Home PageMindat NewsThe Mindat ManualHistory of MindatCopyright StatusManagement TeamContact UsAdvertise on Mindat
Donate to MindatSponsor a PageSponsored PagesTop Available PagesMindat AdvertisersAdvertise on Mindat
What is a mineral?The most common minerals on earthMineral PhotographyThe Elements and their MineralsGeological TimeMineral Evolution
Minerals by PropertiesMinerals by ChemistryAdvanced Locality SearchRandom MineralRandom LocalitySearch by minIDLocalities Near MeSearch ArticlesSearch GlossaryMore Search Options
Search For:
Mineral Name:
Locality Name:
The Mindat ManualAdd a New PhotoRate PhotosLocality Edit ReportCoordinate Completion ReportAdd Glossary Item
StatisticsThe ElementsMember ListBooks & MagazinesMineral MuseumsMineral Shows & EventsThe Mindat DirectoryDevice Settings
Photo SearchPhoto GalleriesNew Photos TodayNew Photos YesterdayMembers' Photo GalleriesPast Photo of the Day Gallery

Altyn-Tyube indentification

Posted by Karl Volkman  
Karl Volkman April 25, 2012 12:28AM

Currently the Altyn-Tyube page list Calcite, Dioptase, and Quartz.

One of the Dioptase specimens in my collection is a group of mediocre dioptase crystals on calcite and two patches of an unidentified green needle shaped mineral. Th needles are a transparent, glassy emerald green and range up to about 1.5mm long Does anyone know enough about the area to suggest what this mineral may be?
open | download - unidenti green needles Altyn-tyube 1mm xls.jpg (144.4 KB)
Ronald John Gyllenhammer April 25, 2012 02:22AM
Hi Karl,

I suspect that it's acicular Malachite. In the past I have identified both Malachite and Azurite on some of my Altyn-Tyube Dioptase specimens. Malachite on these specimens were found both as acicular needles on some specimens and pseudos after Azurite on one specimen, shown here:,11,198041,198066 . I don't know if you have enough material to test a bit of it with dilute HCl to see if it fizzes but that may help if possible to do. Good luck with it Karl.

Sorry, only registered users may post in this forum.

Click here to login

Mineral and/or Locality is an outreach project of the Hudson Institute of Mineralogy, a 501(c)(3) not-for-profit organization.
Copyright © and the Hudson Institute of Mineralogy 1993-2018, except where stated. relies on the contributions of thousands of members and supporters.
Privacy Policy - Terms & Conditions - Contact Us Current server date and time: January 19, 2018 17:19:02
Go to top of page