Rockhounding in Tripura
Tripura currently has 71 sourced map records in this explorer. Tripura is not a classic gem-mining state, but it has useful rockhounding geology: quartz-rich glass sand, plastic/kaolinitic clay, shell limestone with fossil fragments, calcareous and ferruginous sandstone, hard-rock boulders and small lignite occurrences. Government sources also document current REE-in-plastic-clay and glauconitic-sandstone reconnaissance. This guide keeps all Tripura records non-navigable unless recreational access is independently verified.
Materials documented in Tripura
Plastic clay 26 Siltstone 19 Sandstone 14 Shale 12 Calcareous sandstone 11 Quartz sand 9 Lignite 9 Glass sand 8 Silica 7 Hard-rock boulders 7 Sandy clay 6 Clay 6 White clay 6 Calcareous concretions 6
Why Tripura matters for silica sand, clay, shell limestone and folded sedimentary geology
GSI and current Tripura/Ministry of Mines sources document silica/glass sand around Bishramganj, Mohanpur and West Tripura localities; extensive plastic-clay belts; shell-limestone and calcareous sandstone in Jampui and Sakhan; Longtharai hard-rock boulders; small lignite/coal occurrences; and current exploration for REE-bearing plastic clay and glauconitic sandstone. The release separates mineral evidence from collecting permission.
Mapped locality guides
Access and collecting rules
Tripura is dominated by Tertiary sedimentary rocks and has source-backed clay, glass/quartz-silica sand, shell limestone, hard sandstone, small lignite/coal and current REE-in-clay exploration contexts. Riverbed sand and quarry/mineral resources are regulated; geological occurrence is not permission to collect.
Dataset last reviewed: September 8, 2026. Coordinates are reference points; some mineral databases warn that locality coordinates may be generalized.
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