W034 / Oregon

China Hollow lapidary material

Mine/locality label; several silicified materials

China Hollow identifies a source, not one uniform species or pattern.

← Western Lapidary Materials
Reference photograph pending

What it is

Mine/locality label; several silicified materials

What to look for

The mapped examples include pink-tan fine material and brown-yellow jasper/agate. No one color is diagnostic.

At the cutting bench

Assess the piece rather than assuming a shared hardness or flawless yield from the mine name.

Under the loupe

Keep source locality separate from a label such as Biggs jasper or wascoite. Related terminology is not proof that all names are interchangeable.

Source & collecting access

The report’s mine visit does not establish current public access or output. Both remain unverified in this entry.

Status checked 2026-10-03

The market notebook

No verified realized-price range was established for this entry. Asking prices and sold labels are not interchangeable.

Market researched 2026-10-03

Open the field notes

Formation & evidence

DOGAMI recorded several material types at a basalt-flow contact and illustrated polished China Hollow samples.

Collecting & trade context

A genuine mine label can be more useful than resemblance. Preserve dated labels and invoices.

Reading an old label

Preserve the exact name, dates, wrapping and associated pieces. Old-stock age alone does not authenticate a locality or imply exceptional value.

Color comparison limits

Brown/Tan, Yellow, Pink

What we know—and what we don’t

Visual resemblance can narrow a comparison. Material identity, locality attribution and documented provenance need separate evidence.

C&C Reference Collection

Authenticated reference photography is still being assembled.

Sources & Further Reading
  1. DOGAMI Geologic Map 124, pp. 93–94, Figure 8-1

    Mapped report and author-posted text; direct large PDF retrieval failed. Field observations are historical.

Historic locality information is not current collecting permission. For cutting, use suitable dust controls and material-specific safety guidance.