Skip to main content
Geneseo Geoscience Collections
Search using this query type:
Keyword
Boolean
Exact match
Search only these record types:
Item
File
Collection
Exhibit
Exhibit Page
Simple Page
Advanced Search (Items only)
Browse Items
Browse Collections
About
Browse Items (2 total)
Browse All
Browse by Tag
Search Items
Title is exactly "Trachyte"
Sort by:
Title
Creator
Date Added
Trachyte
Light gray
Trachyte
Trachytes are an igneous volcanic rock with an aphanitic or porphyritic texture. Alkali feldspar, low amounts of plagioclase and quartz or a feldspathoid are common in trachytes.
Output Formats
atom
,
dcmes-xml
,
json
,
omeka-xml
,
rss2