Welcome dear students! Today we are going to learn about Mineral Resources of Karnataka from Class 9 Social_Science. In this chapter, we will learn about the minerals available in Karnataka and their importance. We will also understand the distribution and production of important minerals in Karnataka. The mineral resources play a significant role in the economic development of the state and the country. Karnataka has rich and varied mineral resources. Among them, iron ore, gold, manganese, limestone, copper, bauxite, chromite, mica, asbestos and granite are the important minerals. Let us study about them. First, let us discuss iron ore. Iron ore is the raw material for the iron and steel industry. Karnataka has vast reserves of magnetite and haematite grade iron ore. Karnataka stands next to Odisha in the production of iron ore in India. High grade magnetite ore contributes 63 percent of the iron ore produced in our state. The rest is haematite ore. [CHECKPOINT]
Now, let us look at the distribution of iron ore. Iron ore is mainly distributed in the districts of Ballari, Chikkamagaluru, Bagalkot, Chitradurga, Tumakuru, Shivamogga, Dakshina Kannada, Uttara Kannada and Gadag. Ballari has rich deposits and they are mainly found in Hospet and Sandur areas. Iron ore is extracted at Donimalai, Vibhutigudda, Belagala, Kumaraswamy Hills, Timmappana Gudi, Devadri range and Ramadurga Hills. Chikkamagaluru district occupies the second position. Iron ore is found in Bababudangiri hills, Inam Dattatreya Peeta, Kemmannugundi, Kudremukh, Gangamula, Kalhattagiri and Jenusuri hillocks. With a view to protecting bio-diversity, the Supreme Court has ordered mining to be stopped at Kudremukh which has a National Park. There are iron ore deposits in Hosadurga and Sasalu of Chitradurga district, Ameengadh of Bagalkot district, Huliyara and Chikkanayakanahalli of Tumakuru district, and Kumsi, Shankaragudda and Siddarahalli of Shivamogga district. The iron ore produced in the state is supplied to the Vishveshwaraiah iron and steel factory at Bhadravati and the Jindal Vijayanagar Iron and Steel factory near Ballari. The rest is exported. [CHECKPOINT]
Next, we will learn about manganese. Manganese ore is mainly found in oxide form in sedimentary and metamorphic rocks. It is used as an alloy in the manufacture of steel to increase its hardness. It is also used in the manufacture of chemicals, electrical industry, chemical fertilizers, calico printing and paints. Hence it is known as the jack of all trades. Now let us examine its distribution. Deposits of manganese ore are plenty in Karnataka. Karnataka ranks second after Odisha in the production of manganese. The distribution of manganese is found in the areas where iron ore is found. Sandur in Bellary district is an important producer of manganese. It produces about 90 percent of the manganese ore of the state. [CHECKPOINT]
The other main manganese ore mining centers are Kumsi, Shankaragudda and Hosahalli in Shivamogga district, Sadarahalli in Chitradurga district, Chikkanayakanahalli in Tumakuru district, Sirasi taluk, Supa, Londa, Uscanda in Uttara Kannada district, and the districts of Dharwad, Vijayapura and Chikkamagaluru. A major portion of the state’s manganese production is exported to Japan, China and other countries. Let us move on to bauxite. Bauxite ore is mostly used in the preparation of aluminium. It is also used in the manufacture of cement, steel and electric wires. Hence its demand is increasing. Deposits of bauxite ore in Karnataka are found in the districts of Belgavi, Chikkamagaluru, Chitradurga, Dakshina Kannada and Udupi. Belgavi district is the leading bauxite-producing district. There are bauxite mines in Belgavi and Khanapur taluks. This ore is used in the Indian Aluminium Company factory at Belgavi. [CHECKPOINT]
Now, let us study about gold. Gold is a very rare, glittering and durable yellow metal. It is used for making ornaments, and in the manufacture of valuable articles like watches. Recently the use and the demand for gold has increased, its price has also sky-rocketed. Karnataka occupies the first position in the production of gold in India. It produces 80 percent of the total gold in India. Hence Karnataka is known as the Land of Gold. Gold is mined in Karnataka from ancient times. However, gold mining was begun on a large scale in 1880 by John Taylor, and this is the reason for the establishment of Kolar Gold Fields in 1885. There are four important mines in the Kolar Gold Fields. They are Nandidurg, Urigaum, Champion Reef and Mysore Mines. [CHECKPOINT]
Among these, Champion Reef is the deepest gold mine at 3217 meters. The gold deposits in these mines are almost exhausted due to continuous mining for many years. Now they are not working. But mining continues at Hutti mines. At present, Hutti in Raichur district is the biggest gold mine in India. Lots of gold is produced here. Gold is also produced in Bellara in Tumakuru district and Ajjanahalli near Sira. Other places with gold deposits are Mulgund and Kappatagudda in Gadag district, and Kempinakote in Hassan district. Since you are listening to this audio lesson, I will verbally map the geographical spread of these minerals across Karnataka. Iron ore and manganese deposits are heavily concentrated in the southern and central districts, specifically Ballari, Chikkamagaluru, Chitradurga, Shivamogga, and Tumakuru. Northern districts like Bagalkot, Gadag, and Uttara Kannada also contain significant iron ore and manganese reserves. Bauxite deposits are located in the western coastal belt and northern regions, covering Belgavi, Dakshina Kannada, and Udupi. Gold mining is historically centered in the eastern Kolar region, with the currently active Hutti mine situated further north in Raichur district. Visualizing this distribution will help you accurately mark mineral locations on your map exercises. [CHECKPOINT]
Now, let us move on to the exercises to prepare for your exams. I will read each question and provide the complete answer. Part one asks you to fill in the blanks with suitable words. Question one: Kudremukh in Karnataka is noted for iron ore. Question two: The best-quality iron ore is magnetite. Question three: The leading producer of manganese in Karnataka is Sandur in Bellary district. Question four: The metal that is produced from bauxite ore is aluminium. Question five: The deepest gold mine in Kolar Gold Fields is Champion Reef. Part two asks you to answer the following questions in brief. Question six: Why is Karnataka called the Land of Gold? Answer: Karnataka is called the Land of Gold because it occupies the first position in the production of gold in India and produces 80 percent of the total gold in India. Question seven: Which are the important minerals available in Karnataka? Answer: The important minerals available in Karnataka are iron ore, gold, manganese, limestone, copper, bauxite, chromite, mica, asbestos and granite. Question eight: Which is the ore used as an alloy? Answer: Manganese ore is used as an alloy in the manufacture of steel to increase its hardness. [CHECKPOINT]
Question nine: Name the places in Karnataka where iron ore is available. Answer: Iron ore is available in Hospet and Sandur areas of Ballari, Donimalai, Vibhutigudda, Belagala, Kumaraswamy Hills, Timmappana Gudi, Devadri range and Ramadurga Hills. In Chikkamagaluru district, it is found in Bababudangiri hills, Inam Dattatreya Peeta, Kemmannugundi, Kudremukh, Gangamula, Kalhattagiri and Jenusuri hillocks. Other locations include Hosadurga and Sasalu in Chitradurga, Ameengadh in Bagalkot, Huliyara and Chikkanayakanahalli in Tumakuru, and Kumsi, Shankaragudda and Siddarahalli in Shivamogga. Question ten: Which district is an important producer of bauxite? Answer: Belgavi district is the leading and important producer of bauxite. Question eleven: Name the important gold mines of Karnataka. Answer: The important gold mines are the four mines in Kolar Gold Fields, which are Nandidurg, Urigaum, Champion Reef and Mysore Mines, and the currently active Hutti mines in Raichur district. Other places include Bellara in Tumakuru, Ajjanahalli near Sira, Mulgund and Kappatagudda in Gadag, and Kempinakote in Hassan. [CHECKPOINT]
Now, part three asks you to match the following. Item one, Manganese, matches with e, Most useful ore. Item two, Hatti, matches with d, Karnataka’s Largest Gold mine. Item three, Bauxite, matches with a, Aluminium. Item four, Belagavi, matches with b, Indian Aluminium Company. Finally, part four covers activities. Activity one asks you to collect samples and write short notes on the minerals available in Karnataka. To complete this, gather small rock or mineral samples, identify them using the chapter details, and write notes on their appearance, uses, and locations in Karnataka. Activity two asks you to list out the minerals available in your district. Observe your local geography, consult district geological survey reports, and note down minerals like iron ore, manganese, or granite if present in your region. On a map of Karnataka, mark and name the places where minerals are found by locating Ballari, Chikkamagaluru, Kolar, Raichur, and Belgavi, and drawing symbols for each mineral type. Thank you for listening! Keep revising and practicing. Goodbye! [CHAPTER_COMPLETE]