The abstract quantum algebra of observables for 2 + 1 gravity is analy
sed in the limit of small cosmological constant. The algebra splits in
to two sets with an explicit phase space representation; one set consi
sts of 6g - 6 commuting elements which form a basis for an algebraic m
anifold defined by the trace and rank identities; the other set consis
ts of 6g - 6 tangent vectors to this manifold. The action of the quant
um mapping class group leaves the algebra and algebraic manifold invar
iant. The previously presented representation for g = 2 is analysed in
this limit and reduced to a very simple form. The symplectic form for
g = 2 is computed.