Mineralogy Database

Mineralogy Database

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The Mineralogy Database was last updated on 9/5/2012 and it contains 4,714 individual mineral species descriptions with links and a comprehensive image library. Visit the "What's New" section for details.  

Each mineral has a page linked to tables devoted to crystallography, crystal structures, X-Ray powder diffraction, chemical composition, physical and optical properties, Dana's New classification, Strunz classification, mineral specimen images, and alphabetical listings of mineral species. There also are extensive links to other external sources of mineral data and information.

Random Pictures from 4043 Images
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© Tom Loomis / Dakota Matrix
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© Jeff Weissman / Photographic Guide to Mineral Species
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© Jeff Weissman / Photographic Guide to Mineral Species
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© John Veevaert
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© Fabre Minerals
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© Fabre Minerals

Mineral Images
Mineral picture image gallery.  php/MySQL database.

Chemical Composition
Mineral species by chemical elements selectable from a periodic table or search form. Three options are provided: 1) Sorted by %, 2) Sorted by mineral name or 3) New Custom weight percent element search.

Mineral Element Composition Search - To Reset - Click Here
Element 1

Wt % Element 1
Element 2

Wt % Element 2
Element 3

Wt % Element 3
Tolerance %

What is a Mineral ?
Selected mineral definitions spanning the last century defining the mineral kingdom as matter other than that of the plant or animal kingdom.

This section contains tutorials on the 36 crystal classes. Along with this information are links to tables of each class with all the minerals in that class. Printer-ready PDF files of paper crystal models (assembly required) of the crystal classes can be found here.
3D Crystal models of minerals use JAVA applets from KrystalShaper that can be viewed in a browser window. The rotating form on your left is an actual java applet and not an animated GIF image. If  the model is not visible then install JAVA on your PC.

Crystal Structures
Mineral species and other structures with crystal structure data using the jPOWD applet. The jmol version is located here.

X-Ray Powder Diffraction
Mineral species searchable by D1, D2, and D3 diffraction spacing.

New Dana Classification
Mineral species by New Dana system.

Strunz Classification
Mineral species by new Nickel-Strunz system (courtesy of Jim Ferraiolo).

Determinative Mineralogy
Mineral species by physical and optical properties and by calculated radioactivity.

Alphabetical Listing
Mineral species listings. The listings include synonyms, quick links to pronunciation, images, and java crystal forms, name origin, and chemical formula.
A B C D E F G H I J K L M N O P Q R S T U V W Y X Z All

Help Topics
Extensive help files that explain mineralogical terms and other features used in webmineral.com including help on Mineral Name Pronunciations and Radioactivity

Other Links
Links to other sites with mineral data.

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Today is Friday, 27-May-2022 03:04:21 EDT

Factoid #21

Violent mergers of neutron stars in binary solar systems likely are the main sources of the heaviest chemical elements in the universe.

In detailed numerical simulations, the ejected matter from  merging neutron stars provides ideal conditions for the relevant reactions of atomic nuclei to take place, producing the heaviest elements in the correct abundances. From Astronomy.com.

On top of all this, we have the Late Heavy Bombardment, a period of time approximately 4.1 to 3.8 billion years ago (Ga), during which a large number of asteroids and icy comets impacted Earth.  It is this event that added significant amounts of r-process-derived heavy elements to the Earth's crust and, probably, the Earth's oceans.

It looks like we owe the lead in our car batteries and gold rings on our fingers to:
1. Neutron star mergers that took place long before our solar system was formed.
2. Fortuitous addition of these elements to the heavily depleted crust left over after these elements migrated to the Earth's iron core.

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