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INDIA STATE FIELD GUIDE

Rockhounding in Dadra and Nagar Haveli and Daman and Diu

Quick answer

Dadra and Nagar Haveli and Daman and Diu currently has 45 sourced map records in this explorer. Rockhounding geology in Dadra & Nagar Haveli and Daman & Diu is dominated by basalt in DNH/Daman and limestone–calcareous coastal geology in Diu. DNH adds Deccan Trap, Daman Ganga gravel/sand and regulated black-trap quarry context; Daman adds basalt, alluvium and beach deposits; Diu adds miliolitic limestone, calcarenite, shell sand, dunes, karst/cave geology and a documented limestone resource. This release makes no collecting-ready claim and keeps every new record non-navigable.

Open Dadra and Nagar Haveli and Daman and Diu in the interactive mapView India map
45mapped localities
0permission required
24status not confirmed
21viewing/protected

Materials documented in Dadra and Nagar Haveli and Daman and Diu

Weathered basalt 11 Basalt 10 Clay 8 Alluvium 7 Sand 7 Miliolitic limestone 7 Fractured basalt 6 Beach sand 6 Deccan Trap basalt 5 Basalt clast 5 Massive basalt 4 Silt 4 Shell fragment 4 Calcarenite 4

Why this UT matters for Deccan Trap basalt, river sediment and Diu limestone geology

CGWB identifies Deccan Trap basalt as the dominant hard rock in Dadra & Nagar Haveli and Daman, with alluvial and coastal deposits along the Daman Ganga and Daman coast. Diu differs sharply: its exposed Quaternary miliolitic limestone and stabilized calcareous dunes overlie Miocene Gaj beds and deeper Deccan Trap, and solution activity creates cavities/karst features. IBM also reports a substantial limestone resource for the former Daman & Diu territory. The explorer maps those settings conservatively without equating geological occurrence with permission to remove material.

Central Ground Water Board — Groundwater Year Book 2023–24: DNH & DD ↗

Mapped locality guides

DNH Deccan Trap Basalt OverviewDeccan Trap basalt, Vesicular basalt, Massive basaltCollecting status not confirmedSilvassa Basalt–Alluvium ContextBasalt, Alluvium, Sand, GravelCollecting status not confirmedDaman Ganga — Silvassa River Sediment ContextRiver sand, Gravel, Pebble, Basalt clastReference / viewing onlyDadra Pocket Basaltic PlainDeccan Trap basalt, Weathered basalt, Alluvial soilCollecting status not confirmedNaroli Basalt–Alluvial TransitionBasalt, Alluvium, Sand, ClayCollecting status not confirmedPiparia Tributary Sediment ContextRiver sand, Gravel, Basalt clastReference / viewing onlyKhanvel Deccan Trap UplandBasalt, Weathered basalt, Lateritic soilCollecting status not confirmedKhadoli Black Trap Stone Quarry ContextBlack trap basalt, Stone aggregateReference / viewing onlyDudhani Basalt Hill ContextDeccan Trap basalt, Weathered basaltCollecting status not confirmedKauncha Basalt Upland ContextBasalt, Weathered basalt, Fractured basaltCollecting status not confirmedKarchond Basalt Upland ContextBasalt, Weathered basaltCollecting status not confirmedMandoni Basalt Upland ContextBasalt, Fractured basaltCollecting status not confirmedChinsda Basalt Upland ContextBasalt, Weathered basaltCollecting status not confirmedAmboli Basalt ContextBasalt, Weathered basalt, Black soilCollecting status not confirmedDaman Deccan Trap Basalt OverviewDeccan Trap basalt, Weathered basalt, Fractured basaltCollecting status not confirmedMoti Daman Alluvial Aquifer ContextAlluvium, Sand, Silt, ClayCollecting status not confirmedWarkund Alluvial ContextAlluvium, Sand, Clay, Basalt basementCollecting status not confirmedDabhel Alluvial ContextAlluvium, Sand, Clay, Basalt basementCollecting status not confirmedKachigam Alluvial ContextAlluvium, Sand, Clay, Basalt basementCollecting status not confirmedPariyari Basalt Aquifer ContextWeathered basalt, Fractured basalt, Massive basaltCollecting status not confirmedKunta Basalt Aquifer ContextFractured basalt, Massive basaltCollecting status not confirmedJampore Beach Sand ContextBeach sand, Shell fragment, Basalt clastReference / viewing onlyDevka Coast Basalt–Beach Sand ContextBasalt, Beach sand, Coastal sedimentReference / viewing onlyDaman Ganga Estuary Sediment ContextEstuarine sand, Silt, Clay, Basalt clastReference / viewing onlyBhimpore Coastal Sediment ContextBeach sand, Coastal alluvium, Basalt clastReference / viewing onlyKadaiya Coastal Basalt ContextBasalt, Weathered basalt, Beach sandReference / viewing onlySouthwestern Daman Coastal AlluviumAlluvium, Sand, Silt, ClayCollecting status not confirmedDaman Weathered–Fractured Basalt ContextWeathered basalt, Fractured basalt, Massive basaltCollecting status not confirmedDiu Miliolitic Limestone OverviewMiliolitic limestone, Calcarenite, Calcrudite, MicriteCollecting status not confirmedNaida Caves Limestone GeologyMiliolitic limestone, LimestoneReference / viewing onlySouth Diu Limestone Cliff BeltMiliolitic limestone, Calcarenite, Coastal cliffReference / viewing onlyEastern Diu Miliolite Ridge ContextMiliolite, Calcarenite, Calcareous sandstoneCollecting status not confirmedCentral Diu Calcareous Sand-Dune ContextCalcareous sand, Shell sand, Dune sedimentReference / viewing onlyWestern Diu Shell-Sand ContextShell sand, Calcareous sand, Coral fragment, Mollusc fragmentReference / viewing onlyGhoghla Beach Deposit ContextBeach sand, Calcareous sand, Shell fragmentReference / viewing onlyNagoa Beach Deposit ContextBeach sand, Calcareous sand, Shell fragmentReference / viewing onlyVanakbara Coastal Sand–Miliolite ContextCoastal sand, Miliolitic limestone, Shell fragmentReference / viewing onlyNorth Diu Tidal Marsh and Clay ContextTidal clay, Mudflat sediment, SiltReference / viewing onlyDiu Wave-Cut Limestone Platform ContextMiliolitic limestone, Wave-cut platform, CalcareniteReference / viewing onlyDiu Miliolite Karst and Cavity ContextMiliolitic limestone, Karst cavity, Calcified crustReference / viewing only

Access and collecting rules

This merged union territory has three very different geological settings: Deccan Trap basalt and Daman Ganga sediment in Dadra & Nagar Haveli, Deccan Trap plus coastal/alluvial deposits in Daman, and Quaternary miliolitic limestone, calcarenite, shell-rich sand and dunes in Diu. Quarry, river-bed, coastal, resource and tourism records are reference-only unless site-specific collecting permission is independently established.

Dadra & Nagar Haveli District Survey Report / UT mineral and land-access controls ↗

Dataset last reviewed: September 8, 2026. Coordinates are reference points; some mineral databases warn that locality coordinates may be generalized.

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