Abkhaz is typologically classified as a polysynthetic and agglutinative language. Unami is a highly agglutinative, polysynthetic language. Navajo is sometimes classified as a fusional language and sometimes as agglutinative or even polysynthetic. The Siouan languages he considered "mildly polysynthetic" and agglutinative-fusional. Unami is, like many Algonquian languages, polysynthetic and highly agglutinative. The Munda languages are also polysynthetic and agglutinating. Aymara is an agglutinating and, to a certain extent, a polysynthetic language. However, it is a common misconception that polysynthetic morphology is universal among Amerindian languages. In fusional languages and polysynthetic languages, this is often not the case. Many polysynthetic languages display complex evidentiality and/or mirativity systems in their verbs. Polysynthetic languages, such as Chukchi, have words composed of many morphemes. Albite, calcite, and pyrite often show polysynthetic twinning. The range of discontinuous expressions of a polysynthetic language is determined primarily by lexical factors. The Algonquian language family is known for its complex polysynthetic morphology and sophisticated verb system. Coeur d'Alene is a morphosyntactically polysynthetic language.