The Composition of Granite Countertops

| | Granite

Granite is one of the most popular countertop options due to its undeniable beauty. Forged by the earth, granite has a signature look that can’t be duplicated. Do you know what goes into making these one of a kind countertops? In this blog, we’re going to delve into the composition of granite. If you live anywhere around the Twin Cities, like Plymouth, granite countertops are a unique way to upgrade your home.

Mineral Composition

Granite is composed primarily of two consistent minerals, quartz and feldspar. Overall, the combination of these two minerals gives granite a pale color.

  • Quartz: It is very resistant to weathering, which is why it’s so commonly found. It is a very popular choice for jewelry and carvings. It is a 7 on the Mohs scale of hardness.
  • Feldspar: It is the most abundant mineral in earth’s crust. It has many properties that make it good for making glass and ceramics. It is a 6 on Mohs scale of hardness.

Accessory Minerals

Though granite is mostly made up of quartz and feldspar, there are other accessory minerals responsible for giving granite its signature salt and pepper look. The most popular accessory minerals are biotite and hornblende, but they just scratch the surface of all the possible minerals in a slab of granite.

  • Biotite: This mineral is a member of the mica group. It is referred to as “black mica,” as opposed to “white mica,” due to its appearance.
  • Hornblende: It is a mixture of a series of minerals, not identifying with one individual mineral. It’s a general term used to refer to dark-colored, inosilicate minerals.

What This Means for You

The result of granite’s composition means for you, an eye-catching countertop choice. Due to the variety of minerals involved in making up granite, it comes in a wide range of colors. Every slab is unique because each part of the world has different accessory minerals that work their way into the granite. The saying “as hard as rock” had to come from somewhere. With all the interlocking minerals working together, granite is a strong countertop option. Overall, granite is a superior countertop choice, sure to fit into any home.

Interested in having granite countertops installed in your home? Give us a call today at 302-963-8677 or request a free quote.