Got a photo? Identify rocks instantly with the Rockby app
Open the appDescription
An 'Unidentified Rock' is a geological specimen that has not yet been classified or named. It lacks specific characteristics that would allow for immediate identification as a known rock or mineral type. Its properties are unknown and require further analysis.
How to Identify
- Color
- Variable
- Luster
- Variable
- Texture
- Variable
- Crystal Form
- Variable
- Cleavage
- Variable
- Geological Environment
- Variable
Key Facts
- Hardness: Unknown
- Specific Gravity: Unknown
- Crystal System: Unknown
- Color: Variable
- Luster: Variable
- Transparency: Variable
- Fracture: Variable
- Cleavage: Variable
- Composition: Unknown
Quick Check
- Color: Variable
- Luster: Variable
- Streak: Variable
Physical Characteristics
- Crystal Habit: Unknown
- Cleavage Type: Unknown
- Fracture Type: Unknown
- Tenacity: Unknown
- Luster Type: Unknown
Formation
Variable, depends on specific rock type
Usage
None, until identified
Age Distribution
Variable, depends on specific rock type
Finding Tips
Observe all physical properties
Carefully note color, luster, streak, hardness, cleavage, fracture, specific gravity, and any other observable features.
Test chemical reactions
If safe, test for reactions with dilute acids (e.g., HCl) to check for carbonates.
Consult a geologist or mineralogist
Professional analysis using techniques like X-ray diffraction (XRD), scanning electron microscopy (SEM), or petrographic thin section analysis is often required for definitive identification.
Document the find location
Precise geographic coordinates and geological context (e.g., host rock, associated minerals) can be crucial for identification.
Scientific Classification
- Mineral Class
- Unknown
- Group
- Unknown
- Crystal System
- Unknown
- Chemical Formula
- Unknown
- Composition
- Unknown
Explore Unidentified Rock
Identify rocks anywhere
Free on iOS, Android, and Web. Photo identification, full database, and your personal collection.