Correct Answer:<\/strong> Hornblende<\/strong><\/p>\n\n\n\n Ferromagnesian silicates are a group of silicate minerals that contain significant amounts of iron (Fe)<\/strong> and magnesium (Mg)<\/strong>. These elements give the minerals a dark color<\/strong>, typically black or dark green, and make them denser<\/strong> than non-ferromagnesian silicates.<\/p>\n\n\n\n Let’s briefly examine the given options:<\/p>\n\n\n\n In summary, hornblende is the only option that fits the definition of a ferromagnesian silicate. Its iron and magnesium content, along with its dark color and density, distinguish it from lighter, non-ferromagnesian silicates like quartz, muscovite, and orthoclase.<\/p>\n\n\n\n Which of the following minerals is a ferromagnesian silicate? quartz muscovite orthoclase hornblende The Correct Answer and Explanation is: Correct Answer: Hornblende Explanation: Ferromagnesian silicates are a group of silicate minerals that contain significant amounts of iron (Fe) and magnesium (Mg). These elements give the minerals a dark color, typically black or dark green, and […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[],"class_list":["post-31595","post","type-post","status-publish","format-standard","hentry","category-quiz-questions"],"_links":{"self":[{"href":"https:\/\/gaviki.com\/blog\/wp-json\/wp\/v2\/posts\/31595","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/gaviki.com\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/gaviki.com\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/gaviki.com\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/gaviki.com\/blog\/wp-json\/wp\/v2\/comments?post=31595"}],"version-history":[{"count":1,"href":"https:\/\/gaviki.com\/blog\/wp-json\/wp\/v2\/posts\/31595\/revisions"}],"predecessor-version":[{"id":31597,"href":"https:\/\/gaviki.com\/blog\/wp-json\/wp\/v2\/posts\/31595\/revisions\/31597"}],"wp:attachment":[{"href":"https:\/\/gaviki.com\/blog\/wp-json\/wp\/v2\/media?parent=31595"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/gaviki.com\/blog\/wp-json\/wp\/v2\/categories?post=31595"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/gaviki.com\/blog\/wp-json\/wp\/v2\/tags?post=31595"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}Explanation:<\/h3>\n\n\n\n
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Quartz is composed of silicon and oxygen (SiO\u2082). It contains no iron or magnesium<\/strong>, so it is not<\/strong> a ferromagnesian silicate. It is usually colorless or light-colored and is part of the felsic<\/strong> mineral group.<\/li>\n\n\n\n
Muscovite is a type of mica, usually light-colored<\/strong> and rich in potassium and aluminum<\/strong>. It does not contain significant amounts of iron or magnesium, making it non-ferromagnesian<\/strong>.<\/li>\n\n\n\n
Orthoclase is a potassium feldspar. It is light in color<\/strong>, typically pink, white, or cream. It contains potassium, aluminum, and silicon<\/strong>, but not iron or magnesium, so it is also not<\/strong> ferromagnesian.<\/li>\n\n\n\n
Hornblende is a dark-colored mineral<\/strong> and a member of the amphibole group<\/strong>. It contains a complex mix of elements, including iron (Fe), magnesium (Mg), calcium (Ca), aluminum (Al), silicon (Si)<\/strong>, and others. The presence of both iron and magnesium classifies hornblende as a ferromagnesian silicate<\/strong>.<\/li>\n<\/ol>\n\n\n\n![\"\"](\"https:\/\/gaviki.com\/blog\/wp-content\/uploads\/2025\/06\/learnexams-banner5-182.jpeg\")
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