"rarely small" is correct and usable in written English.
You can use it when you want to emphasize how something is not small very often. For example, "The apartment was rarely small; usually it was quite spacious."
The effect on the broader economy is never quick and rarely small.
Most species of Ephedra are branched shrubs (or rarely small trees) while others are vinelike, often clambering over other vegetation.
Though most models are described with differential equations, the discrete-time models governed by difference equations are more appropriate than the continuous ones when the size of the population is rarely small or the population has non-overlapping generations.
It has been found that the discrete time models governed by difference equations are more appropriate than the continuous ones when the size of the population is rarely small or the population has non-overlapping generations [5].
Fights in New York are rarely small.
Rarely, small clusters or colonies of Salmonellae were detected (Fig. 1c 6 h p.i).
For large E b /N 0, residual powers on superposed bands are rarely smaller than those on non-superposed bands, because the former has a large mean value.
However, members of several extinct groups fell into the regions where m2 was largest, or rarely, smallest, including the majority of the polyphyletic "condylarths".
In case of the genome-wide linkage studies for a complex, multifactorial disease such as PD, the regions with high LOD scores are rarely smaller than 20 cM.
Refined models are found in the literature, often with terms of period 6 months [ 14], sometimes 3 months [ 3], and, rarely, smaller [ 11].
Sometimes, although rarely, smaller kiosks and independent vendors will provide a better rate than large banks.
