Geology Toolkit Premium

Geology Toolkit is a complete android application which allows geologists to examine and explore minerals and rocks features under microscope or hand-specimen properties.

Geology Toolkit makes mineralogy and petrology to be easier to examine a thin section and to understand the characteristic properties of each mineral/rock without a petrographic microscope, which is known to be very expensive. It is mainly addressed to geoscience students/geologists as a guide in individual or supervised laboratory work.

Made by a Geologist for Geologists.


โ–บ Premium design and Ad free
The interface is user-friendly, ad-free and very intuitive, the main menu can be accessed every time by swiping your finger horizontally across the screen or by pressing the 'hamburger' icon in the top left corner.

โ–บ Fundamentals of Geology
Reading and Learning

โ–บ GeoQuizzes - Learn by doing!
Test your geology knowledge of the material on this application or from the class/laboratory/field with these GeoQuizzes.
๐ŸŒŸ Mineralogy Quiz;
๐ŸŒŸ Igneous rocks Quiz;

โ–บ Dedicated to Mineralogists
Various features are developed as a guide for field trips or laboratory work.
๐ŸŒŸ 59 most common minerals in thin section (transmitted and reflected light);
๐ŸŒŸ 'IdentifyMin under microscope' is an algorithm for a fast and logical identification of minerals in thin sections;
๐ŸŒŸ Hand-specimen photographs (at high resolution) of 59 most common minerals with pan zoom functionality;
๐ŸŒŸ Swipeable gallery (touch-friendly - swipe & pan zoom) with pictures of minerals and rocks thin sections under microscope;
๐ŸŒŸ Handbook of Mineralogy - search in 5236 Mineral species (mineral name, chemistry, elements, country of type locality and structural group name);
๐ŸŒŸ Searchable Mohs Hardness Scale for over 80 common mineral species;
๐ŸŒŸ 'Gemstones' section offers information about gemstones, jewelry, and precious metals;
๐ŸŒŸ 'IdentifyMin (Hand-Specimen)' can be used to easily identify hand-specimen minerals;
๐ŸŒŸ Michel-Levy color chart;

โ–บ Classify an Igneous, Sedimentary or a Metamorphic rock
๐ŸŒŸ 18 most common igneous rocks in thin section (transmitted light): alkali-feldspar granite, alkali-feldspar rhyolite, granite, rhyolite, granodiorite, tonalite, dacite, diorite, andesite, basalt, gabbro, alkali-feldspar syenite, alkali-feldspar trachyte, syenite, trachyte, foid syenite, peridotite, and harzburgite;
๐ŸŒŸ Handy Rock Identification;
๐ŸŒŸ Handbook of Rocks - provides a compendium of more than 159 rock types (with description);
๐ŸŒŸ Browse igneous rocks which contain a classification for volcanic and plutonic rocks
๐ŸŒŸ Textures and microstructures of igneous rocks;
๐ŸŒŸ Interactive QAPF diagrams (volcanic and plutonic rocks);
๐ŸŒŸ Diagram for modal classification of gabbroic rocks;
๐ŸŒŸ Interactive Ultramafic diagrams (Ol-Opx-Cpx & Ol-Px-Hbl);
๐ŸŒŸ Interactive TAS diagram;
๐ŸŒŸ Bowen's reaction series;
๐ŸŒŸ Sedimentary and Metamorphic rocks classification.

โ–บ Crystallography
๐ŸŒŸ Introduction to Crystallography (laws, crystal systems, etc.);
๐ŸŒŸ 48 crystal forms with axes and miller indices;
๐ŸŒŸ XRD list for over than 6000 entries, fully searchable.

โ–บ Chemistry features
๐ŸŒŸ Periodic Table of Elements;
๐ŸŒŸ Solubility chart.

๐ŸŒŸ GeoCompass;
๐ŸŒŸ Geological Time Scale feature;
๐ŸŒŸ Geology quotes;
๐ŸŒŸ Geology Dictionary+ - provides a compendium of more than 10.000 terms that are central to a broad range of geological sciences and related fields like petrology, mineralogy, geochemistry, crystallography, and paleontology;
๐ŸŒŸ Engineering Geology section.


This app can be used as a virtual manual in disciplines like Optical Mineralogy, Petrology and cannot replace the University classes or 'dedicated' books.

Note: I constantly update this application with new features and photos.
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What's New

๐ŸŒŸ GeoCompass bugs fixed;
๐ŸŒŸ Fundamentals updated - new topic: Petrology;
๐ŸŒŸ new Sedimentary identification diagram & updates;
๐ŸŒŸ new Igneous (intrusive) rocks classification diagram;
๐ŸŒŸ new Igneous (texture & color) rocks classification diagram;
๐ŸŒŸ new Rock Origin Flowchart under The Rock Cycle;
๐ŸŒŸ new Rock identification Flowchart under The Rock Cycle;
๐ŸŒŸ new Mineral identification Flowchart under The Rock Cycle;
๐ŸŒŸ fixed some minor bugs.

โš’๏ธ Please don't forget to RATE (support) the app
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Additional Information

Eligible for Family Library
Eligible if bought after 7/2/2016. Learn More
April 24, 2018
Current Version
Requires Android
4.0 and up
Content Rating
Offered By
Andrei Ionut Apopei
Department of Geology, ROMANIA
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