Mindat is the largest mineral database and mineralogy reference website on the internet. This site contains worldwide data on minerals, mineral collecting, mineral localities and other mineralogical data.

This site is growing every day, with new mineral information, localities and photographs added by members.

The Mindat Directory is your online source for mineral dealers, gem, lapidary, fossil products, clubs, shows and personal websites. Browse our comprehensive list of 2,506 companies, dealers and websites or add your business/website.

Search Mindat

Search our extensive database of minerals, gems, rocks, mineral locations and photos:

Mindat News

• 5th May 2013 Changsha Show - next week
• 14th April 2013 NY-NJ Gem and Mineral Show 2013
• 31st March 2013 Coming Soon: NY-NJ Show and beyond
• 20th March 2013 Tucson 2013 - The TGMS Show
• 23rd February 2013 Tucson 2013 - Westward Look Show
• 10th February 2013 Tucson 2013 - Crystalline Treasures of China ...
• 9th February 2013 Tucson 2013 - "Inn Suites" Show
• 8th February 2013 Tucson 2013 - The Pueblo Gem and Mineral Show
• 24th January 2013 Tucson 2013 - Don't miss these events
• 20th November 2012 Mindat.org Conference 2012 - Morocco
• Older News ArticlesClick here to view all older mineral news articles

New Discussions

• PESA MINERALFEST- JUNE 1,201315:15 21st May 2013 - posted by KC Dalby
• Re: Italy/Sicily/ Mineralogical Trip/ Meet local ...14:57 21st May 2013 - posted by Henry Barwood
• Re: Selling everything I own to prospect14:54 21st May 2013 - posted by Wolfgang Hampel
• black crystals on Mimetite from Tsumeb14:44 21st May 2013 - posted by Chris Stefano
• Re: American Tunnel mine carbonate14:29 21st May 2013 - posted by Timothy Greenland
• Re: Selling everything I own to prospect14:08 21st May 2013 - posted by Joseph Polityka
• Re: American Tunnel mine carbonate13:43 21st May 2013 - posted by Mark & Linda Mahlum
• Re: Selling everything I own to prospect13:35 21st May 2013 - posted by Jolyon & Katya Ralph
• Re: Calcite, Belgium13:35 21st May 2013 - posted by Harjo Neutkens
• Re: American Tunnel mine carbonate13:18 21st May 2013 - posted by Mark & Linda Mahlum
• Re: German Arsenic CRYSTALS?13:10 21st May 2013 - posted by Uwe Ludwig
• Re: The Nature Thread13:02 21st May 2013 - posted by Vincent Rigatti
• Re: Selling everything I own to prospect12:33 21st May 2013 - posted by Rudy Bolona
• Re: Selling everything I own to prospect11:05 21st May 2013 - posted by Neal Luppescu
• Re: German Arsenic CRYSTALS?09:38 21st May 2013 - posted by Simone Citon
• Re: American Tunnel mine carbonate09:34 21st May 2013 - posted by Timothy Greenland
• Re: Andalusite09:29 21st May 2013 - posted by Olav Revheim
• Re: American Tunnel mine carbonate09:24 21st May 2013 - posted by Timothy Greenland
• Re: Biscaia07:57 21st May 2013 - posted by António Manuel Ináçio Martins
• Re: Italy/Sicily/ Mineralogical Trip/ Meet local ...07:32 21st May 2013 - posted by Gaetano Sicurella
• Re: American Tunnel mine carbonate07:30 21st May 2013 - posted by Dan R. Lynch
• Re: American Tunnel mine carbonate06:37 21st May 2013 - posted by Timothy Greenland
• Re: Acquired a new collection06:26 21st May 2013 - posted by Jenna Mast
• Re: Montebrasite-Quartz graphic intergrowts03:12 21st May 2013 - posted by Alfredo Petrov
• Re: Selling everything I own to prospect03:07 21st May 2013 - posted by Mark & Linda Mahlum

Dealer News

• 21st May - Weinrich Minerals, Inc.New Update/Auction Closing
• 20th May - Webminerals s.a.sNew May Upadate
• 20th May - e-RocksSpoilt for Choice?
• 20th May - YourMineralCollectionNew update online
• 20th May - Minservice.comFerrero & GMineral Updates
• 19th May - e-RocksSunday's Stall
• 18th May - e-Rocks Tin Can Hill Day...
• 17th May - e-RocksA Busy End to a Busy Week!
• 17th May - Wendel MineralsNagyagite, Hessite, Sylvanite
• 16th May - e-RocksThursday's Ins & Outs!
• 16th May - Weinrich Minerals, Inc.New Update/New Auction
• 16th May - Crystal ClassicsEurpean Update 16th May 2013
• 16th May - YourMineralCollectionNew update online
• 16th May - mineralman.comAmazing Auctions ENDING NOW!
• 15th May - Mintreasure.comNew update!
• 15th May - e-Rocks Lots Happening Today!
• 15th May - M&W MineralsWeekly Update
• 15th May - Dakota Matrix MineralsDaily Five
• 14th May - e-RocksTuesday's Carousel!
• 14th May - Weinrich Minerals, Inc.Auction Closing

New Minerals

• Ag-nuffieldite a synonym of Argentonuffieldite
• Cupromatildite a variety of Matildite
• Argentonuffieldite a variety of Nuffieldite
• Alumino-Magnesiotaramite a synonym of Taramite
• Unnamed (Pb Oxide-Chloride)
• Massicotit a synonym of Massicot
• Stibarsenic a synonym of Stibarsen
• Nickel-Adamin a synonym of Nickeloan Adamite
• Braunite Group
• Unnamed (Bi-Cu-As-Oxide)
• Unnamed (Cu-Oxy-Arsenate)
• Jodblei a synonym of Schwartzembergite
• Bialith a synonym of Wavellite
• Unnamed (Pb-Cu-Bi Selenide)
• Eisentitan a synonym of Ilmenite
• Eisenturmalin a synonym of Schorl
• Eisenspeiskobalt a synonym of Safflorite
• Eisenkobaltkies a synonym of Safflorite
• Eisenniere
• Rathite-V a synonym of Sartorite

New Localities

• Ogun State, Nigeria
• Agualva, Sintra, Lisbon District, Portugal
• Schachernhöhle, Innerfahrafeld, Unrechhttraisen, Lilienfeld, Mostviertel, Lower Austria, Austria
• Pougamaro River placers, Pala, Mayo-Kebbi Ouest Region, Chad
• Mayo N’dala River placers, Pala, Mayo-Kebbi Ouest Region, Chad
• Goueigoudoum, Pala, Mayo-Kebbi Ouest Region, Chad
• Massonebaré, Pala, Mayo-Kebbi Ouest Region, Chad
• Bamdi, Pala, Mayo-Kebbi Ouest Region, Chad
• Mbidou, Pala, Mayo-Kebbi Ouest Region, Chad
• Wietzen, Lichtenau im Waldviertel, Waldviertel, Lower Austria, Austria
• Bärenlacke, Trübenbach, GamingMostviertel, Lower Austria, Austria
• Trübenbach, GamingMostviertel, Lower Austria, Austria
• Cercado deposit, Poços de Caldas, Poços de Caldas plateau, Minas Gerais, Brazil
• Gunnar deposit, Goldfields District, Beaverlodge Region, Saskatchewan, Canada
• Bolger mine, Beaverlodge Region, Saskatchewan, Canada
• Miguela prospect (Miguela deposit; Miguela project), Guarayos Province, Santa Cruz Department, Bolivia
• Pine Creek District, Teton Co., Idaho, USA
• Horseshoe Basin District, Teton Co., Idaho, USA
• Bruneau District, Owyhee Co., Idaho, USA
• Goose Creek District, Twin Falls Co., Idaho, USA

New/Updated Glossary Entries

• kimberlite - An ultramafic volcanic rock, dominated by olivine, phlogopite and ...
• gemmy - gemmy 1: Having the characteristics (as hardness, brilliance, ...
• amygdaloid - amygdaloid A vesicular or cellular igneous rock, ordinarily ...
• sulphuret - An obsolete old name for sulphides/sulfides ( see sulfuret)
• sulfuret - Pac. The undecomposed metallic ores, usually sulfides. Chiefly ...
• amygdaloidal rock - amygdaloidal rock A rock containing amygdules and/or amygdales, or ...
• amygdaloidal geode - amygdaloidal geode A geode which has formed in and ...
• amygduler - amygduler A lava in which the steam holes have been filled with ...
• amygdale - amygdale A vesicle or vapor cavity of volcanic and occasionally of ...
• amygdule - amygdule or amygdale A vesicle or vapor cavity of volcanic and ...
• amygdaloidal - a. Containing amygdules. Like or pertaining to an ...
• cirque - Cirque A deep steep-walled basin high on a mountain, usually shaped ...
• corrie - Corrie, also spelled Corry. A term used in Scotalnd for a circular ...
• taconite pellets - Taconite pellets are made from taconite ore (cherty or jaspery rock ...
• boxwork - A network of intersecting blades or plates of limonite or other iron ...
• boxwork texture - A texture showing a porous aggregate with plates or septa which ...
• lithophysae - Hollow, bubblelike, or roselike spherulites, usually with a ...
• arrastre - A circular rock-lined pit in which broken ore is pulverized by heavy ...
• ant hill garnets - These are pyrope garnets from Navajo Indian Reservation, McKinley ...
• lutite - A general name used for consolidated rocks composed of silt and/or ...
• pin - A section of metal stock, either round or hexagonal (from an old ...
• shines - A local miners' term for sphalerite in the Franklin, New Jersey, ...
• kidney stone - Kidney stone: a. A nodule of iron stone common in the Oxford clay ...
• inbyae - Gem mining method in Burma. It is a pit which is 6 or more meters in ...
• kobin - Gem mining method in Burma. Today it is seldom used. It is a round ...
• gwè-dwin - Gem mining method in Burma. A gwè-dwin (hard-rock hole) is similar ...
• samyay byôn - This word is the local Burmese term denoting the type of gem-bearing ...
• loo-dwin - The term loo or loo-dwin (twisted holes) is applied to natural caves ...
• letkya-dwin - A type of gem mining in Burma. Found in the karst topography of ...
• lebin - A mining method used for gem mining in Burma. It is a vertical pit, ...
• byôn - This word is the local Burmese term denoting the gem-bearing gravel. ...
• myaw-dwin - A mining method used for gem mining in Burma. On selected ...
• herkimer diamond - Rock crystal, from Herkimer County, N.Y. Shipley Herkimer ...
• zebra stone - Zebra stone is simply a commercial name for a banded brown and white ...
• references, authorities, sources and geographical abbreviations used in the glossary. - This is a list of authorities and sources taken from the list in ...
• morb - An abbreviation for Mid Ocean Ridge Basalt. Said of basalts that form ...
• ttg - An abbreviation for Tonalite, Trondhjemite, and Granodiorite. Found ...
• stock - i. A rarely used term for a chimneylike orebody. Synonym of: ...
• qapf diagram - Within the QAPFM classification scheme proposed by the IUGS, rocks ...
• qapfm classification - The IUGS proposed a now generally accepted scheme for classifying ...
• streckeisen diagram - Synonym of QAPF diagram.
• tas classification - A classification scheme for volcanic rocks based on their bulk ...
• ternary diagram - A ternary diagram is a triangular coordinate system; the edges of the ...
• ultramafites - Collective name for igneous rocks containing 90% or more mafic ...
• basic - 1. Said of an igneous rock with a silica content between 45 and 52 ...
• intermediate - 1. A secondary or auxiliary horizontal passage driven between levels ...
• acidic - 1. Said of an igneous rock with a silica content above 63 ...
• acid - 1. An acid is a chemical compound that produces hydrogen ions when ...
• ultrabasic - 1. Said of an igneous rock with a silica content below 45 weight-% ...
• ultramafic - 1. Igneous rocks that contain more than 90 vol-% mafic minerals are ...

New Articles

• Joe Mulvey - 19th May 20132013 Micromounters of New England Annual Symposium
• António Manuel Ináçio Martins - 16th May 2013The origin of Stone
• Alan Melbourne - 11th May 2013Monazite with feldspar inclusions
• Rick Dalrymple - 6th May 2013Fantasy Canyon
• Volker Betz - 6th May 2013Equipment Test
• Jolyon & Katya Ralph - 5th May 2013Changsha Show - next week
• Rick Dalrymple - 21st Apr 2013Cleaning Quartz from Gold Hill, Utah
• Dave Crosby - 9th May 2013Calendars and Cassiterite - the Heavy Mineral that Changed History!
• António Manuel Ináçio Martins - 16th Apr 2013The Bronze Boards of Vipasca
• Steve Rust - 14th Apr 2013The Minerals of the Red Hill Granites, Isle of Skye
• Jolyon & Katya Ralph - 14th Apr 2013NY-NJ Gem and Mineral Show 2013
• Larry Maltby - 6th Apr 2013Keweenaw (Part 1) Keweenaw Point
• Dave Crosby - 4th Apr 2013Petrified Wood 225 MA.
• Frank Festa - 4th Apr 201317. Union City, Pennsylvania Fossil Hunting Trip
• Frank Festa - 2nd Apr 201316. Conneaut Lake, Pennsylvania… Kame and Kettle Topography
• Dave Crosby - 1st Apr 2013Reading Thundereggs
• Jolyon & Katya Ralph - 31st Mar 2013Coming Soon: NY-NJ Show and beyond
• Alan Melbourne - 29th Mar 2013Paramelaconite and Euchroite
• Dave Crosby - 2nd Apr 2013Clay Canyon & the Little Green Monster Variscite Mine
• Dave Crosby - 27th Mar 2013Variscite