This chemical is called Calcium magnesium dicarbonate, and it's also named as Carbonic acid, calcium magnesium salt (2:1:1). With the molecular formula of C₂CaMgO₆, its molecular weight is 184.40. The CAS registry number of this chemical is 7000-29-5. Additionally, it's gray white or light gray white.

Other characteristics of the Calcium magnesium dicarbonate can be summarised as followings: (1)ACD/LogP: -0.81; (2)# of Rule of 5 Violations: 0; (3)ACD/LogD (pH 5.5): -1.98; (4)ACD/LogD (pH 7.4): -3.77; (5)ACD/BCF (pH 5.5): 1; (6)ACD/BCF (pH 7.4): 1; (7)ACD/KOC (pH 5.5): 1; (8)ACD/KOC (pH 7.4): 1; (9)#H bond acceptors: 3; (10)#H bond donors: 2; (11)#Freely Rotating Bonds: 0; (12)Polar Surface Area: 57.53 Å²; (13)Flash Point: 169.8 °C; (14)Enthalpy of Vaporization: 63.37 kJ/mol; (15)Boiling Point: 333.6 °C at 760 mmHg; (16)Vapour Pressure: 2.58E-05 mmHg at 25°C.

Synthesis of this chemcial: The Calcium magnesium dicarbonate could be obtained by the method of open-pit mining. Reference the process of phosphate rock if you want to make it.

Uses of this chemical: Calcium magnesium dicarbonate is used for the manufacture of magnesium sulfate, calcium magnesium phosphate, magnesium carbonate light and granular fertilizer in the chemical industry. It's also used as rubber and pharmaceutical fillers, soil acidity neutralizer, metallurgical flux, building stone, refractories and ceramics, glass ingredients.

You can still convert the following datas into molecular structure: 
1.SMILES: [Mg+2].[Ca+2].[O-]C([O-])=O.[O-]C([O-])=O
2.InChI: InChI=1/2CH2O3.Ca.Mg/c2*2-1(3)4;;/h2*(H2,2,3,4);;/q;;2*+2/p-4
3.InChIKey: HHSPVTKDOHQBKF-XBHQNQODAP