Vote for your favorite mineral in #MinCup26! - Sphalerite vs. Anorthite
Both zinc ore Sphalerite and calcium plagioclase feldspar Anorthite have perfect cleavage that will split cleanly if you hit them with a hammer, but only one can claim a larger split of your votes!
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Glassy rock

A rock classification type
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01674970017271929215461.jpg
Cali glass

Quindío Department, Colombia
06197510017271929222132.jpg
Mahogany Obsidian

Glass Buttes, Lake County, Oregon, USA
00541610017271929212080.jpg
Snowflake Obsidian, etc.

Catamarca Province, Argentina
01674970017271929215461.jpg
Cali glass

Quindío Department, Colombia
06197510017271929222132.jpg
Mahogany Obsidian

Glass Buttes, Lake County, Oregon, USA
00541610017271929212080.jpg
Snowflake Obsidian, etc.

Catamarca Province, Argentina
01674970017271929215461.jpg
Cali glass

Quindío Department, Colombia
06197510017271929222132.jpg
Mahogany Obsidian

Glass Buttes, Lake County, Oregon, USA
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About Glassy rockHide

A glassy rock that may be formed by igneous or metamorphic processes.


Unique IdentifiersHide

Mindat ID:
51463
Long-form identifier:
mindat:1:1:51463:3

Classification of Glassy rockHide

Sub-divisions of Glassy rockHide

Common AssociatesHide

Associated Minerals Based on Photo Data:
1 photo of Glassy rock associated with PhlogopiteKMg3(AlSi3O10)(OH)2
1 photo of Glassy rock associated with HaüyneNa3Ca(Si3Al3)O12(SO4)

Internet Links for Glassy rockHide

References for Glassy rockHide

Reference List:
Quick NavTopAbout Glassy rockUnique IdentifiersClassification Sub-divisions Common AssociatesInternet Links References
 
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