Flop trips - flop miniraise + turn overbet

[darther]

This is my 3rd hand at the table. In the previous 2 hands, villan limped both times and called all the way down with middle pairs and seems to be very loose/calling station. Because of this, I was surprised by the miniraise, however, he could be doing that with any Ace and I still think he would at the very least miniraise preflop with big Aces (AK, AQ, AJ). Also, if he did have a big Ace, it doesn't make sense for him to overbet the turn so much.

Thoughts? If I call the turn bet, I have $4.20 left (so villan basically bet half of my stack).

PokerStars No-Limit Hold'em, $0.10 BB (6 handed) Poker Stars Converter Tool from FlopTurnRiver.com (Format: 2+2 Forums)

BB ($16)
UTG ($3.10)
MP ($16.15)
CO ($9.85)
Hero ($10.35)
SB ($8.45)

Preflop: Hero is Button with A[img]/images/graemlins/heart.gif[/img], T[img]/images/graemlins/spade.gif[/img].
<font color="#666666">1 fold</font>, MP calls $0.10, <font color="#666666">1 fold</font>, <font color="#CC3333">Hero raises to $0.45</font>, <font color="#666666">2 folds</font>, MP calls $0.35.

Flop: ($1.05) 4[img]/images/graemlins/spade.gif[/img], A[img]/images/graemlins/diamond.gif[/img], A[img]/images/graemlins/spade.gif[/img] <font color="#0000FF">(2 players)</font>
MP checks, <font color="#CC3333">Hero bets $0.75</font>, <font color="#CC3333">MP raises to $1.5</font>, Hero calls $0.75.

Turn: ($4.05) 6[img]/images/graemlins/spade.gif[/img] <font color="#0000FF">(2 players)</font>
<font color="#CC3333">MP bets $4.2</font>, ...