Mine detail: Rivona

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Location: Goa, India, Asia
Lat / long: 15.16676, 74.10881
dep_id: 10097587
mrds_id: AD00226
Commodity type: metallic
Major mineral: Manganese
Operation type: Unknown
Production size: Small ammount of material produced
Development status: Past Producer
ore: Braunite, Jacobsite, Manganite, Pyrolusite
gangue: Chlorite, Goethite, Quartz, Sericite
orebody_fm: BOULDERS AT SURFACE, CONCRETIONS, LENSES, POCKETS
alteration: Oxidation
conc_proc: Supergene Alteration (Lateritization)
ore_ctrl: Crest Of Anticlines
Reporter: Pracejus, Bernard.M.
hrock_unit: Dharwar Supergroup
hrock_type: Phyllite
arock_type: Diorite,Gabbro,Mafic Metamorphic Rock,Gneiss
Structure: Large Area Of Shear Zones (About 50km Long, About 20km Wide)
tectonic: Indian Peninsular Shield
References:
  • Deposit:: DESSAI, A.G., 1985 AN APPRAISAL OF THE MANGANESE ORE DEPOSITS OF GOA, INDIA. PROC INDIAN NATN. SCI. ACAD., 51/A/6: 1021-1032
  • Deposit:: DESSAI, A.G. AND DESHPANDE, G.G., 1980, MINERALOGY AND PARAGENESIS OF THE MANGANESE ORE DEPOSITS OF SANGUEM DISTRICT, GOA, INDIA. RECENT RES, GEOL, 6 : 47I - 488
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