  Utilizing an equivparticle model with both linear confinement and
leading-order perturbative interactions, we obtain systematically the
properties of strangelets and nonstrange quark matter ($ud$QM) nuggets at
various baryon ($A$) and charge ($Z$) numbers, where the detailed
single-quark-energy levels are fixed by solving Dirac equations in mean-field
approximation (MFA). We then examine the structures of compact dwarfs made of
light strangelets or $ud$QM nuggets forming body-centered cubic lattices in a
uniform electron background. Despite the strangelets and $ud$QM nuggets
generally become more stable at larger $A$, the compact dwarfs are still stable
since the fusion reactions between those objects do not take place in the
presence of a Coulomb barrier, which is similar to the cases of light nuclei in
normal white dwarfs. If $ud$QM dwarfs or strangelet dwarfs are covered with
normal matter, their masses and radii become larger but do not exceed those of
ordinary white dwarfs. Finally, we investigate the radial oscillation
frequencies of $ud$QM dwarfs and strangelet dwarfs, and find that their
frequencies are typically higher than traditional white dwarfs. The stability
of compact dwarfs are then analysised by examining radial oscillation
frequencies of the fundamental mode, where compact dwarfs covered by normal
matter are still stable.
