# Minerals guide: Geology

> Minerals guide: Smart Mineralogist - Geology Toolkit. Stones

Canonical page: [https://chrome-stats.com/d/com.dictionary.MineralsGuide.Geology](https://chrome-stats.com/d/com.dictionary.MineralsGuide.Geology)

## Overview

- **ID:** `com.dictionary.MineralsGuide.Geology`
- **Platform:** Android
- **Type:** Android app
- **Status:** Available
- **Publisher:** 99 Dictionaries: The world of terms
- **Category:** BOOKS\_AND\_REFERENCE
- **Downloads:** 296,370
- **Rating:** 4.26 / 5 (1,535 ratings)
- **Version:** 3.9.1
- **Last updated:** 2025-02-07
- **First published:** 2020-04-04
- **Publisher country:** ES
- **Size:** 21 MB
- **Data as of:** 2026-09-07
- **Store listing:** [Google Play Store](https://play.google.com/store/apps/details?id=com.dictionary.MineralsGuide.Geology)
- **Website:** [https://c49caa863.app-ads-txt.com](https://c49caa863.app-ads-txt.com/)
- **Privacy policy:** [https://docs.google.com/document/d/e/2PACX-1vRG\_KbflPnrXRj\_oscdQPCHakjPY3qiFCEK\_X2IUTl5gW5OKkloupp3VuRWfmk8U2NCDqhITJ1Jig8q/pub](https://docs.google.com/document/d/e/2PACX-1vRG_KbflPnrXRj_oscdQPCHakjPY3qiFCEK_X2IUTl5gW5OKkloupp3VuRWfmk8U2NCDqhITJ1Jig8q/pub)

## Description

**Minerals Guide: Geology Toolkit** is your comprehensive offline encyclopedia for mineralogy and geology. Designed for geologists and enthusiasts alike, this free handbook covers essential terminology and concepts about minerals, rocks, crystals, and gemstones. It offers detailed information on physical properties such as hardness, color, luster, and specific gravity, alongside insights into mineral formation, crystallography, and classification.

With advanced search and voice recognition features, the toolkit allows easy exploration of around 4000 stones with unique characteristics. The app supports offline access, eliminating data costs, and includes hundreds of examples to aid mineral identification and study. Whether you're a professional or a hobbyist, this Minerals Guide is an invaluable resource to have on hand for deepening your understanding of mineral sciences.

## Rankings

- #130,760 — Overall

## Permissions and access

### Permissions

- `android.permission.ACCESS_ADSERVICES_AD_ID`
- `android.permission.ACCESS_ADSERVICES_ATTRIBUTION`
- `android.permission.ACCESS_NETWORK_STATE`
- `android.permission.FOREGROUND_SERVICE`
- `android.permission.INTERNET`
- `android.permission.READ_EXTERNAL_STORAGE`
- `android.permission.WAKE_LOCK`
- `android.permission.WRITE_EXTERNAL_STORAGE`
- `com.android.vending.BILLING`
- `com.dictionary.MineralsGuide.Geology.DYNAMIC_RECEIVER_NOT_EXPORTED_PERMISSION`
- `com.google.android.c2dm.permission.RECEIVE`
- `com.google.android.finsky.permission.BIND_GET_INSTALL_REFERRER_SERVICE`
- `com.google.android.gms.permission.AD_ID`

## Review summary

Users praise the app for broad, well-organized mineral information and easy-to-understand explanations, plus helpful visuals for study. Common drawbacks are intrusive ads and image-related problems (wrong/missing pictures, loading failures, and no zoom). Some note coverage gaps, but overall sentiment is positive with room for content and UI improvements.

### Pros

- Extensive, well-organized mineral information that is easy to understand
- Clear explanations and learning-friendly content
- Good pictures and visual aids that help learning
- Useful organizational features for collectors (alphabetical listing and markers)

### Cons

- Ads are intrusive with a pay-to-remove-ads option which some users dislike
- Image-loading issues including wrong or missing pictures and lack of zoom on photos

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Source: [Chrome-Stats](https://chrome-stats.com/d/com.dictionary.MineralsGuide.Geology)