mineral rights

mineral rights

does anyone know the value of mineral rights in the southern illinois area?also how are they valued.my family once owned farmland in this area but when it was sold i kept the mineral rights as a seperate entity just in case.an oil co. sent me a letter inquiring about leasing my mineral rights.thinking this might be a way of coming up with investment capital,i'm thinking i'd rather sell than lease.any info woulb be appreciated.this is unknown territory.keep moving forward,rob

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whether you think you can or you think you can't, you're right.- Henry Ford
keep moving forward, rob