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

• Re: Blatant manipulation of color photographs20:21 19th May 2013 - posted by Rob Woodside
• Re: Andara Crystal Scam20:18 19th May 2013 - posted by Jim Meeker
• Re: Blatant manipulation of color photographs20:05 19th May 2013 - posted by Steven Kuitems
• Re: MINERALS IN THE MOVIES19:56 19th May 2013 - posted by el cascaillou
• Re: Elba Italy19:55 19th May 2013 - posted by Michael Kuss
• Re: In the Beginning . . .19:27 19th May 2013 - posted by Colin Robinson
• Re: In the Beginning . . .19:11 19th May 2013 - posted by Roberto Bosi
• Re: Giant Wisconsin Plagioclase Crystals19:02 19th May 2013 - posted by Paul Brandes
• Large Quartz Geode like pocket Wenshan Western ...18:57 19th May 2013 - posted by Alan Weigand
• Re: Selling everything I own to prospect18:51 19th May 2013 - posted by Tim Jokela Jr
• Re: Blatant manipulation of color photographs18:39 19th May 2013 - posted by Tim Jokela Jr
• Advises, need a new stereomicroscope and camera.18:34 19th May 2013 - posted by Ulf Nyberg
• Re: Magnetic wood18:30 19th May 2013 - posted by Tim Jokela Jr
• Re: Looking to buy land with Amethyst crystals18:24 19th May 2013 - posted by Tim Jokela Jr
• Re: Pet peeve: Styrofoam in Perky boxes18:22 19th May 2013 - posted by Tim Jokela Jr
• Re: In the Beginning . . .18:10 19th May 2013 - posted by Tim Jokela Jr
• Re: Blatant manipulation of color photographs17:50 19th May 2013 - posted by David Von Bargen
• Re: In the Beginning . . .17:26 19th May 2013 - posted by Rob Woodside
• Re: Blatant manipulation of color photographs16:52 19th May 2013 - posted by Van King
• Re: Stone Quarry found signs of Gold and Also ...16:50 19th May 2013 - posted by Mel Baker
• Re: In the Beginning . . .16:38 19th May 2013 - posted by John Montgomery
• Re: Blatant manipulation of color photographs16:23 19th May 2013 - posted by Rob Woodside
• Re: In the Beginning . . .16:20 19th May 2013 - posted by Owen Lewis (2)
• Re: In the Beginning . . .16:13 19th May 2013 - posted by Owen Lewis (2)
• Re: MINERALS IN THE MOVIES16:08 19th May 2013 - posted by Rob Woodside

Dealer News

• 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
• 13th May - e-RocksNot Your Ordinary Monday!
• 13th May - Voelter MineralsNew Minerals Update
• 13th May - Weinrich Minerals, Inc.New Update
• 12th May - e-RocksThis Sunday on e-Rocks!
• 11th May - e-RocksTinCanHill Auction

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

• Hornitos District, West Belt, Mariposa Co., California, USA
• Fiumara Cannone, Gerace, Aspromonte Massif, Reggio Calabria Province, Calabria, Italy
• Sweetwater Point, Jerseydale District, Mariposa Co., California, USA
• Jerseydale District, Mariposa Co., California, USA
• Mt Wyatt area, Whitsunday Region, Queensland, Australia
• Jenkins Hillemory Quarry (Richardson; Timertone; Emery; Rosemite Cement; Yosemite Cement), Clearing House, Clearing House District, East Belt, Mariposa Co., California, USA
• Jasper Point, Hunter Valley Mountain, Hunter Valley District, West Belt, Mariposa Co., California, USA
• Indian Peak, Mariposa Co., California, USA
• Kaijo, Shenyang Prefecture, Liaoning Province (Manchuria; Dongbei Region), China
• Santa Cruz Mountain, West Belt, Mariposa Co., California, USA
• Lautakoski, Pajala, Norrbotten, Sweden
• Bispenæringen, Gamvik, Finnmark, Norway
• Mutolo Mtn., Canolo, Reggio Calabria Province, Calabria, Italy
• Alsen, Krokum, Jämtland, Sweden
• Krokum, Jämtland, Sweden
• Yayoi, Mikasa City, Sorachi Province, Hokkaido, Japan
• Kashiba City, Nara Prefecture, Kinki Region, Honshu Island, Japan
• Musselshell, Weippe District (Musselshell District), Clearwater Co., Idaho, USA
• Ruby Creek District, Clearwater Co., Idaho, USA
• Oxford District, Clearwater 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 - Today2013 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