Overview

Mine Type	Underground
Status	Active
Commodities	Zinc Lead Silver
Mining Method	Longhole open stoping
Backfill type	...
Production Start	...
Mine Life	...
Snapshot	The Rampura Agucha Mine (RAM) is the largest and richest, lead-zinc deposit in India. During 2022-2023, commissioned third silo at production shaft to increase storage capacity for improvement in shaft hoisting capacity. Actions are in progress to reach 10,000 tpd shaft hoisting capacity.

Deposit type

• Sediment-hosted

Summary:

Rampura Agucha is a stratiform, sediment-hosted Lead Zinc deposit, occurs in Pre-Cambrian Banded Gneissic Complex and forms a part of Mangalwar complex of Bhilwara geological cycle (3.2-2.5 billion years) of Archean age and comprising of magmatites, gneisses, graphite mica schist, pegmatite and impure marble. The rocks have been subjected to polyphase deformations and high-grade metamorphism. The deposit lies in the contact zone of Mangalwar - Sandmata complex and along the major NE trending Delwara lineament and predominantly covers southeast plain of Ajmer and Bhilwara.

The deposit has been broadly domained into four discrete zones, referred to as; ‘south ore’ (zone 1); ‘core ore’ (zone 2); and ‘north ore’ (zones 3 and 4). The basis of the zones is the reasonably distinct variations in the zinc grades along strike. Furthermore, the relationship between lead and silver between the northern and southern zones shows a markedly different regression profile.

The graphite-mica-sillimanite schist hosts the economic mineralization in the Rampura Agucha deposit. The economic minerals in order of decreasing abundance along with their ranges are:
• Sphalerite (15-20%)
• Pyrite (15-18%)
• Pyrrhotite (12-14%)
• Galena (1-2%)
• Sulphosalts (0.1-0.2%)

The deposit extends over 1,550 m along strike and has now been intersected to a vertical depth of 1,100 m below surface. The horizontal thickness varies between a few metres to 80 m, averaging between 50 to 60 m in the upper 250 m of the deposit. The mineralised unit also contains some inclusions of sub-ore grade material. The average dip shallows from around 70- 80° in the upper part of the deposit to about 50° in the middle and lower portions, as well as the northeast and southwest flanks. Deep drilling has shown that the deposit thickens and steepens back to approximately 70° in the lower portions, while the strike length at these lower portions appears to remain restricted to around 500 m.

Two different main ore types are identified at RAM from the North and South areas of the deposit. The material from the North area is understood to be softer and more difficult to float, while material from the South area is harder and contains higher levels of graphite.

Mining Methods

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Comminution

Crushers and Mills

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Processing

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Production

Commodity	Product	Units	2023	2022	2021	2020	2019	2018	2017	2016	2015
Zinc	Metal in concentrate	M lbs	....	....	....	....	789	966	1,065	1,124	1,413
Zinc	Concentrate	kt	....	....	....	....
Lead	Metal in concentrate	M lbs	....	....	....	....	77	92	99	121	127
Lead	Concentrate	kt	....	....	....	....
Silver	Metal in concentrate	koz			....	....	5,791	6,833	5,810

Operational metrics

Metrics	2023	2022	2021	2020	2019	2018	2017	2016	2015
Ore tonnes mined	....	....	....	....	3,330 kt	3,842 kt	4,696 kt	4,705 kt	5,451 kt
Annual milling capacity	....	....	....	....		6.5 Mt	6.5 Mt
Tonnes milled	....	....	....	....	5.11 Mt	5.7 Mt	5.16 Mt		5,394 kt
Annual mining capacity	....	....	....	....		6.2 Mt of ore	6.2 Mt of ore

Personnel

Job Title	Name	Profile	Ref. Date
.......................	.......................		Nov 28, 2023
.......................	.......................		Nov 28, 2023
.......................	.......................		Nov 28, 2023
.......................	.......................		Nov 28, 2023