Yosemite Slate Flagstone

World-famous Yosemite Black Slate Stone, also called Mariposa Slate Stone by some stone yards, beautiful slate material from the Yosemite Valley, the heart of the Southern Sierra Nevada Gold Country. This California slate has an intermediate hardness between mica schists and shale. It is available in both random flagging and tumbled stone. While slate is generally used for patios, pathways, and stone veneer, it can be used indoors as well. This charcoal gray to black stone can be colored lightly to heavy with iron oxide.

When ordering use the Purchase Order function at checkout and enter ROCK as your payment method. This will allow you to create an order for a firm transportation quote without having to pay for it at this time. While we have posted transport rates, in many circumstances, we are able to ship the order to you for less. You will be given a firm cost on the whole order within a few minutes to a few hours.

Tons vs. Yards and Square Feet.
In most cases we charge by the ton and we have the receipts from the scale house at the quarry to show upon request. Materials sold by the yard tend to have very in-accurate amounts in the trucks. Amounts depend the size of the loader bucket, how well the material was scooped up and who was supervising the loading of the truck. Scale House totals don't lie, so why take a chance on losing money and time with how many square feet, scoops, skips and or dumps were made in loading the truck?
Architects, public agencies, contractors and owner-builders requiring a competitive bid for the materials and transport costs should E-mail us with material specifications, amount and date needed and buyers contact information. We typically employ trucks with carrying capacities ranging from 17 to 26.5 tons.
Decomposed granite, crushed rock, gravel, sand and similar materials are typically hauled in;
Truck n Transfers from 24 to 26.5 tons,
End-dumps from 24 to 25 tons
Bottom and Side Dumps 25 tons
Super-10's from 10 to 17 tons

River rock and cobbles are most commonly hauled in Truck n Transfer units and End-dumps to about 25 tons.

Rubble and boulders hauled in bulk are transported in End-dumps and Super-10's. Loads range from 10 to 24 tons per load.

Moss Rock and Specialty Boulders are banded to pallets and shipped via flatbeds to about 24 tons per load.

Supersacks, palleted rock and specimen boulders are hauled on flatbeds in amounts to about 24 tons.

Flagstone and other specialty stone materials are haul on flatbeds in amounts up 24 tons per load.

Beach Pebble Orders - Mexican Beach Pebbles are hauled from warehouses space we maintain in San Diego, Ontario California and other
cities in the USA on a seasonal basis on common carriers. Pallets weigh 2,000 to 3,000 pounds each and there are service charges if you do not have a forklift or loading dock at the delivery location.

Mixed or Split Loads -
Many crushed and decomposed granite quarries produce more than 1 type of rock and several different sizes of materials. To make the most of your trucking expenses we often can to your site 2 different rock colors or sizes.
End-dump deliveries boulders can often be added to crushed rock orders.
Casa Grande AZ and Colorado Springs Distribution Yards
From these yards we can ship mixed loads of Mexican Beach Pebbles, decomposed granite, crushed rock, Arizona and Colorado River Rock, flagstone, boulders and other rock products to landscape and building construction sites throughout the USA and Canada. In many cases contractors and DIY Pro's can get the entire job delivered in a single truck load(s).

Product Photos
Earth, stone and masonry other building products are of course natural products. Variations in industry or branded product names, color and texture do occur and are part of what make these building products so unique. Please use the photographs within these pages only as a guide. These images depict building materials products that have been, crushed, cut, shaped or manufactured to achieve the visual and structural requirements for landscape or structural building construction. Photos of materials in actual landscapes or buildings reflect craftsmanship and other factors that may have changed the appearance of the delivered material. Additional weather and lighting conditions at the time each photo was taken and the limits of different computer screen resolution, can and do effect the appearance. Therefore, we cannot guarantee and buyer agrees that seller and seller's agents have no liability to match purchased materials against any of the images contained herein. Photos are of materials as specified in product description are provided by our staff, vendors or agents on the behalf of all parties from the quarry, manufacture or vendor of these products or our own in field photos and product analysis and represent the specified product but may not be of actual inventory on hand during any given period of time. Product specifications and availability are subject to change without notice.

Product Samples
California Building Material Supply believes that for most consumers and end users of these landscaping or building material products the best location to view most of these products is at the actual site where they are going be used. This is particularly true for existing homes and commercial locations that are being renovated or re-landscaped. Samples of most materials can be delivered and evaluated by you on site for you to make the most informed choice possible. Materials are sold per the specification of the stone type, product brand and basic sizes.

Samples are shipped via United State Postal Service, Priority Mail. We can get about 16 pounds of material into a large flat rate box. Samples are sent with an invoice on Net 10 Day Terms. When ordering your samples use the Purchase Order function at checkout and enter SAMPLES. This will allow you to make a purchase without having to pay for the samples at that time.