Valuation of rock minerals deposits can be prepared for various purposes. Purchase-sale transaction of deposits and purchase of land properties associated with deposit for security of future extraction, are the most common cases. Sometimes, such valuation is prepared for purposes of incurring liabilities secured by deposit or for disclosure of deposit value in assets of company. According to new geological and mining law, rock mineral deposits are covered by the law of land ownership, being treated as parts of land property and valued together with them. Such valuation should be performed by property appraiser with help of mineral deposit valuator. For deposits being exploited or just under development, income approach should be used, while for undeveloped deposits – comparative approach. The paper presents assumptions of new standard on valuation of land properties with mineral deposits, currently being under preparation commonly by the Polish Federation of Valuation Appraisers and the Polish Association of Mineral Asset Valuators.