Strengite is a mineral that is typically found in areas with high levels of iron, phosphorous, and other mineral deposits. The word strengite does not have any direct synonyms since it is a specific mineral name. However, there are a variety of minerals that may be found within the same geological location as strengite. These minerals may include variscite, wavellite, and ludlamite. Other minerals, such as arrojadite and mitridatite, may also be found in similar geological formations. While these minerals are not direct synonyms for strengite, they may be associated with it due to their similar mineral composition and formation process.