Mr Gordon, who in April pulled out of bidding for the final round of ABC Learning centres because they "didn't stack up from an investment perspective", made $120 million in 2004 when he sold his Peppercorn Childcare business to ABC.

He used a substantial portion of that money to buy large rural land holdings and build his operations to almost 700,000 hectares across Queensland and New South Wales.

Late last year, Mr Gordon purchased Old Bundemar - a $10m lamb feedlot near Trangie, NSW.

"We are just reducing our exposure to wool and increasing the fat lamb operations," he said.

"The immediate thing is focusing on the lamb feedlot which we gained a 50,000 head approval for last year. We think it has a sure future."

Mr Gordon has not yet marketed the 436,100ha Mt Margaret property and its neighbouring 161,000ha leasehold, but the property could fetch between $12m and $13m on a bare basis.

The property has a carrying capacity of 66,500 sheep and 6000 head of cattle.

Dick Allpass, of Elders Real Estate, is the agent for the property.

"It's a top performing, reliable sheep station and should attract a lot of interest. You wouldn't get more productive sheep country in Australia," he said.

Mr Gordon, through his private investment entity, Bydand, has pursued several property ventures, including retirement accommodation managers SCV Group (formerly Sunnycove Management) and listed funds manager Viento.

Last year, he resigned from both companies' boards.

BRW magazine pegged his wealth at $180m million last year.

Since 2007, he has sold about $30m worth of commercial property and refocused on his rural operations.

"We sold four commercial properties just because the yields got so extraordinarily low. We've starting moving assets across into rural because it's always had good capital appreciation," he said.

"We will probably look to acquire more country because it gives a good strategic perspective over time."

His portfolio includes the Cooplacurriba cattle property in NSW, which he purchased in 2003.