Langsdon Minerals Collection

03/26/2025

Microscopic details, maximum wonder. 💎

01/30/2025

Thanks Celina 6th Grade for inviting us out to share our rocks and minerals with you! It was a blast! 💥🪨💎

10/18/2024

Thanks for scheduling a visit with us! Great students and great questions.

08/15/2024

Did you know you can schedule a private tour and interactive program for FREE - any size!? Judy Zehringer brought in her 3 awesome grandkids today and we talked all about rocks and minerals. Thanks for coming in today!

04/05/2024

Looking for something to do this weekend? Swing by the library to check out Ohio's Largest Mineral Collection! We are open regular hours on Saturday and Monday, a perfect activity for friends and family who are in town for Eclipse Weekend.

08/25/2023

Read more to learn which impurities in minerals create which specific color….like how Fe2O3 (iron oxide) creates a yellow quartz. The process of cutting and polishing these raw minerals is nuts as well!

Smelting quartz spheres.….
Smelting quartz to transform it into different colors typically involves a process known as "doping" or "impurity introduction." Here's a simplified overview of the process:

Selection of Raw Material: Start with high-quality quartz crystals. The purity of the quartz is essential to achieve the desired color, as impurities will affect the final result.

Doping with Metal Oxides: To change the color of quartz, you introduce small amounts of specific metal oxides or other compounds during the smelting process. The choice of dopants determines the resulting color. For example:

Iron oxide (Fe2O3) can create a yellow, brown, or red color.

Titanium (Ti) and iron (Fe) can produce blue or violet shades.

Chromium (Cr) can create green colors.

Cobalt (Co) can produce blue colors.

Melting and Mixing: The quartz crystals, along with the chosen dopant materials, are melted together at high temperatures in a furnace. The temperature and conditions are carefully controlled to ensure a homogeneous mixture.

Cooling and Solidification: After the mixture is thoroughly melted and mixed, it is slowly cooled to allow the quartz to solidify. The rate of cooling can affect the final appearance of the crystal.

Cutting and Polishing: Once the quartz has solidified, it's cut into the desired shapes, such as gemstones, beads, or other decorative items. The surfaces are then polished to enhance their clarity and shine.

Quality Control: The final products are inspected for color consistency and quality. Any defects or inconsistencies are addressed before the products are packaged and sold.

The specific temperatures, dopants used, and other factors can vary depending on the desired color and the type of quartz being processed. Keep in mind that quartz smelting and coloring is a specialized industry, and achieving precise colors can be a complex and precise science.

08/07/2023

08/07/2023

How cool is this gigantic clear quartz crystal!? Totally one of a kind! Thousands of years of slow growth, and millions of years old. Just one of the many unique minerals in our collection.

07/27/2023

Did you know that cell phones contain 65 elements, all which come from raw material from the Earth? The human body only is comprised of 25 elements! Gold, quartz, copper, lithium, and potassium are all within a smart phone, just to name a few.

The Earth provides the materials we need to create every single thing in our society - that's a lot of things! Let's try our best to respect and take care of our planet!

The story behind the specimens at the center of the museum’s new exhibition “Cellphone: Unseen Connections”