Marcasite - Wikipedia
The mineral marcasite, sometimes called "white iron pyrite", is iron sulfide (FeS 2) with orthorhombic crystal structure. It is physically and crystallographically distinct from pyrite , which is iron sulfide with cubic crystal structure .
Marcasite Meanings and Crystal Properties
Marcasite is an Iron oxide that has the exact same chemical makeup of Pyrite, but forms in a completely different crystal structure. Unlike Pyrite, Marcasite does not exhibit a cubic identity, instead, it crystallizes in a variety of other forms, such as tabular, pyramidal, nodules, fibers, flakes, and masses.
Marcasite Value, Price, and Jewelry Information - Gem Society
Everything you ever wanted to know about marcasite. Find value guidelines, scientific data, expert comments, and more in our Gemstone Listings.
Marcasite Mineral | Uses and Properties - Geology.com
Marcasite is a yellow to silvery-yellow iron sulfide mineral with a chemical composition of FeS 2. It forms by precipitation from acidic waters in surface or near-surface environments. Marcasite is commonly found in sediments, sedimentary rocks, and hydrothermal deposits in many parts of …
What is Marcasite Jewelry? – A Quick Guide
Dec 20, 2022 · Marcasite jewelry (or pyrite as it should be called) refers to a gemstone and to a jewelry style. We cover the history, value and current situation of marcasite jewelry.
Marcasite Gemstone: Properties, Meanings, Value & More
Mar 11, 2023 · Marcasite is a brassy yellow gemstone similar to pyrite. It’s prevalent in vintage jewelry, but requires some caution to maintain. Learn marcasite’s history, properties, prices, and benefits!
Marcasite – Mineral Properties, Photos and Occurrence
May 19, 2023 · Marcasite is common at some deposits, but it is less widespread than more stable pyrite. It often occurs together with pyrite, sphalerite, galena, fluorite, and calcite. As a secondary mineral it is most commonly an alteration product of other iron …
The Mineral marcasite - The Mineral and Gemstone Kingdom
Marcasite is the lesser known companion of the famous mineral Pyrite. Marcasite has the same chemical formula as Pyrite, but crystallizes in a different crystal system, thereby making it a scientifically distinct mineral species.
Marcasite: a gemstone with a dual identity - My Irish Jeweler
Marcasite is the ultimate accent stone whether paired with lustrous pearls or other gemstones. Given their subtle luster and their natural affinity with white metals, marcasite is a versatile stone that adds depth and style to any jewelry design.
Marcasite | Sulfide, Pyrite, Iron | Britannica
Marcasite, an iron sulfide mineral that forms pale bronze-yellow orthorhombic crystals, usually twinned to characteristic cockscomb or sheaflike shapes; the names spear pyrites and cockscomb pyrites refer to the shape and colour of these crystals.