This app provides a quick reference for students, educators, professionals, or anyone interested in minerals. This searchable database is easy to use. No internet connection is required. Ideal for field use.

Entries for more than 300 common mineral species cover the vast majority of occurrences without presenting an overwhelming number of obscure species rarely encountered. The software provides hand sample photos, photomicrographs of thin sections, physical properties, crystal structure animations, optical properties, classification, and occurrence data as well as partial data for many more species, varieties, groups, sub-groups, and series.

Search for color, hardness, and streak in field and classroom uses. Use the app as a companion to a polarizing light microscope by searching for birefringence or refractive index. Identify your unknown mineral through use of any or all 54 search criteria. The comprehensive search feature allows mineral identification by using known physical properties (such as color, streak, luster etc.) or crystal and optical properties. Or, you can visually search the hand sample photos and photomicrographs using the pop-up image galleries.

What’s New

Version 2.1

update credits screen, urls & copyright info

Ratings and Reviews

4.8 out of 5
9 Ratings

9 Ratings

rustbeltrevival ,

Fantastic Mineral Reference App!

I use this app to look up minerals that I own or want to add to my collection. The search function is easy and the results are very detailed and helpful. Highly recommended!

MrPebius ,

Needs a new interface

I love the 3D structure renderings that can rotated. But the interface is modal, so you must back out of a listing just to see the photos! There should be but a single screen for each mineral that I can just scroll.

I would also appreciate a wiggle mode for the 3D structures.

Developer Response ,

Could you try the latest version? I believe we have addressed this issue.

Lib25geo ,

Stunning App

Should have expected this to come from Tasa. Every serious geologist should have a copy, the only thing I would like to add is the capacity to create a custom library. Again - awesome app! Well done guys!


Danny Pilkenton
1.3 GB

Requires iOS 10.3 or later. Compatible with iPhone, iPad, and iPod touch.



Age Rating


  • Family Sharing

    With Family Sharing set up, up to six family members can use this app.

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