Here is an interesting specimen! The matrix is probably mostly hemimorphite with open spaced lined with clear, colourless hemimorphite crystals. The to of the specimen which is part of a large vug shows platy calcite crystals on the hemimorphite crystals. To one side is a spray of aurichalcite crystals. As well there are other vugson the piece one of which shows excellent sprays of aurichalcite crystal sprays on hemimorphite. Very nice!