We have sent you the new password to the email you have registered with:

[email protected]

Registration successful! Complete your profile to get personalized updates and access to exclusive offers

Write A Review About Shullsburg For A Chance to Win A $100 Amazon Gift Card

search icon
arrow icon
0 reviews
3 out of 5 stars based on 0 ratings
See review
Marcasite from Shullsburg, Wisconsin, USA. (public display, Seaman Mineral Museum, Michigan Technological University, Houghton, Michigan, USA) A mineral is a naturally-occurring, solid, inorganic, crystalline substance having a fairly definite chemical composition and having fairly definite physical properties. At its simplest, a mineral is a naturally-occurring solid chemical. Currently, there are over 4900 named and described minerals - about 200 of them are common and about 20 of them are very common. Mineral classification is based on anion chemistry. Major categories of minerals are: elements, sulfides, oxides, halides, carbonates, sulfates, phosphates, and silicates. The sulfide minerals contain one or more sulfide anions (S-2). The sulfides are usually considered together with the arsenide minerals, the sulfarsenide minerals, and the telluride minerals. Many sulfides are economically significant, as they occur commonly in ores. The metals that combine with S-2 are mainly Fe, Cu, Ni, Ag, etc. Most sulfides have a metallic luster, are moderately soft, and are noticeably heavy for their size. These minerals will not form in the presence of free oxygen. Under an oxygen-rich atmosphere, sulfide minerals tend to chemically weather to various oxide and hydroxide minerals. Marcasite is an iron sulfide mineral, FeS2, which is the same chemical formula as pyrite. Different minerals having the same chemical formula are called polymorphs. Other examples of polymorphs are graphite-diamond (both C) and calcite-aragonite (both CaCO3). Pyrite and marcasite both have a metallic luster, a brassy gold color, and a dark gray to black streak. They both lack cleavage, and they have the same hardness (H = 6 to 6.5). Marcasite tends to have a paler brass color than pyrite. Some marcasites are almost silvery-colored. How does one visually distinguish marcasite from pyrite? Apart from color, marcasite crystals are typically plates, or sharp & pointed, and marcasite tends to twin, resulting in cockscomb masses (www.mindat.org/photo-408969.html). Marcasite also more readily breaks down into whitish powder (FeSO4). Pyrite can convert to marcasite naturally, and vice versa. Pyrite concretions may have preserved needle-shaped crystals of marcasite, but the marcasite is gone. X-ray analysis may be needed to determine which polymorph is present. Photo gallery of marcasite: www.mindat.org/gallery.php?min=2571 by James St. John is licensed under CC BY 2.0
Shullsburg is a city in Lafayette County, Wisconsin, United States. The population was 1,226 at the 2010 census. The city is adjacent to the Town of Shullsburg.

Managed by the Age Friendly Foundation

Reviews (0)
By Rating

Clear Filters


There are no reviews for Shullsburg yet.

Be the first one to review this city!

Senior Living Communities

Explore Home Care Options Near You

Consider the benefits of an in-home caregiver. Care can range from 1 hour a day, to a few hours a week, to full time. Connect to a trusted provider today.

Find a Financial Professional Near You

With 9,000 financial professionals available across the nation and 4,500 on MassMutual.com, MassMutual is committed to helping you secure your future.



How did Wisconsin earn the grade of C? We examined the state taxes based on how age friendly they are. Wisconsin has a state sales tax of 5.00%. Of particular interest is that Wisconsin does not have taxes on social security. There are no estate taxes. There are no taxes imposed on inheritance. Wisconsin has an effective property tax rate of 1.95%. Weighing these taxes and other taxes most likely to impact the aging population is how Wisconsin earned its state tax grade of C.

Learn more about taxes in Wisconsin

Know Another Place Well?

Your review is now part of Age Friendly Advisor and is putting a human touch on research about age friendly communities. You’re helping others worldwide to more easily age and engage with their current community - or a new one.