Mining Bitshares is not possible because it uses Proof-of-stake while all minable coins use Proof-of-Work Algorithm. The concept of Proof-of-work is to simply protect the DDoS attacks. Proof-of-work was the main part of Satoshi’s whitepaper or founder of Bitcoin he developed a trustless and distributed consensus with the help of this algorithm. Trustless means you don’t need any third party to send or receive payments (Eg, Visa, Mastercard). Blockchain a public ledger which stores all the transactions and shows publically with the help of a Block explorer.
Proof-of-work needs mining or computational power to run the network and providing rewards for providing computational power. For eliminating this useless power Dan Larimer, the founder of Bitshares created proof-of-stake. Unlike bitcoins where miners receive rewards for solving blocks by using their computational power, Proof-of-stake deterministic way which means rewards are based on share or stake in crypto-currency. Here miners are called forgers instead where they receive transaction fees in place of block reward.
You must read why such kind of coin cannot be mined – Click here